Make an Appointment
(800) 237-6437
Sub 300T Professional

DOXA

Sub 300T Professional

$1,990.00

X
Availability in store
  • Somers Point
    Not available
  • Newtown
    Not available


In 1968, DOXA launched the SUB 300T Conquistador, the first general public diver's watch equipped with a helium release valve. 50 years later, the new SUB 300T pays tribute to the groundbreaking original. This 3-hand diver's watch combines the aesthetic genes of the SUB 300T Conquistador with the technical refinements that define the high-performance diver's watch of today. 

Reference number: 840.10.351.10
Metal: Stainless Steel
Stock number: 311818
Size: 42mm
Dial: Orange
Straptype: Stainless Steel
Movement: Swiss mechanical automatic, self-winding
Due to the recent unpredictability in gold prices, we cannot guarantee the prices of items currently out of stock.

100% Satisfaction Guarantee

Our customers come first! We guarantee to not only meet, but to exceed your expectations with the brilliant quality of our luxury jewelry. At Bernie Robbins, we guarantee to provide you with the best jewelery and the best buying experience. In most cases, you can return your purchase for a full refund.

Refund Policy

To ensure your complete satisfaction, you may return your purchase within 15 days to receive a full refund or 30 days to exchange your purchase for another item of equal or higher value. This excludes special orders and custom purchases.

Lifetime Diamond Upgrade

We are pleased to offer a lifetime diamond upgrade program, ensuring that at any time you can decide to make your ring even more beautiful with a diamond of greater value. This allows you to purchase a diamond at your budget now and whenever you are ready, you can simply upgrade to a bigger or higher quality diamond. The value will be determined by the purchase price as shown on its original receipt. Mounting will be accepted as part of the trade-in due to wear and will be valued at the price of gold at the time of trade-in.

You may also like

Stainless Steel Spirit Zulu Time
Longines

Stainless Steel Spirit Zulu Time

$3,050

Manero Peripheral Blue Edition
Carl F. Bucherer

Manero Peripheral Blue Edition

$7,900.00

Patravi Scubatec
Carl F. Bucherer

Patravi Scubatec

$7,700.00

Classics Index Automatic
Frederique Constant

Classics Index Automatic

$1,195.00

Heritage Bicompax Annual
Carl F. Bucherer

Heritage Bicompax Annual

$9,500.00

Navitimer Automatic GMT 41
Breitling

Navitimer Automatic GMT 41

$6,200.00

AVI REF. 765 1953 RE-EDITION
Breitling

AVI REF. 765 1953 RE-EDITION

$9,050.00

Stainless Steel Spirit Zulu Time
Longines

Stainless Steel Spirit Zulu Time

$3,150

Stainless Steel Spirit Zulu Time
Longines

Stainless Steel Spirit Zulu Time

$3,050

Stainless Steel Conquest
Longines

Stainless Steel Conquest

$2,550

Sub 300 Beta Aquamarine
DOXA

Sub 300 Beta Aquamarine

$2,290.00

Stainless Steel Dolcevita
Longines

Stainless Steel Dolcevita

$1,425

Chronomat B01 42
Breitling

Chronomat B01 42

$13,700.00

18K Yellow Gold & Steel Lady-Datejust
Rolex

18K Yellow Gold & Steel Lady-Datejust

$8,400.00

Stainless Steel Conquest Chronograph
Longines

Stainless Steel Conquest Chronograph

$3,650

Sub 200 Divingstar
DOXA

Sub 200 Divingstar

$1,090.00

Stainless Steel Spirit Zulu Time
Longines

Stainless Steel Spirit Zulu Time

$3,050

Heritage Bicompax Annual
Carl F. Bucherer

Heritage Bicompax Annual

$8,800.00

Stainless Steel Spirit Zulu Time
Longines

Stainless Steel Spirit Zulu Time

$3,150

Superocean Heritage B20 Automatic 42
Breitling

Superocean Heritage B20 Automatic 42

$6,750.00

Day-Date 36
Rolex

Day-Date 36

$18,000.00

Superocean Heritage Chronograph 44
Breitling

Superocean Heritage Chronograph 44

$7,000

Manero PowerReserve
Carl F. Bucherer

Manero PowerReserve

$9,900.00

Two-Tone Master Collection
Longines

Two-Tone Master Collection

$4,150

Sub 300T Sharkhunter
DOXA

Sub 300T Sharkhunter

$1,950.00

NAVITIMER B01 CHRONOGRAPH 43
Breitling

NAVITIMER B01 CHRONOGRAPH 43

$9,550.00

Stainless Steel Dolcevita
Longines

Stainless Steel Dolcevita

$1,425

NAVITIMER B01 CHRONOGRAPH 41
Breitling

NAVITIMER B01 CHRONOGRAPH 41

$9,450

Manero Peripheral
Carl F. Bucherer

Manero Peripheral

$7,900.00

Sub 600T Searambler
DOXA

Sub 600T Searambler

$1,590.00

Heritage Bicompax Annual Hometown Edition Boston
Carl F. Bucherer

Heritage Bicompax Annual Hometown Edition Boston

$8,100.00

Navitimer Automatic 36
Breitling

Navitimer Automatic 36

$5,150.00

Sub 200 Caribbean
DOXA

Sub 200 Caribbean

$1,090

Avenger Automatic 42
Breitling

Avenger Automatic 42

$4,750.00

Chronomat B01 42
Breitling

Chronomat B01 42

$23,100.00

Manero Flyback
Carl F. Bucherer

Manero Flyback

$18,500.00

Manero Urban
Carl F. Bucherer

Manero Urban

$4,400

Top Time B01 Ford Thunderbird
Breitling

Top Time B01 Ford Thunderbird

$8,250.00

Avenger B01 Chronograph 44
Breitling

Avenger B01 Chronograph 44

$8,550.00

Navitimer 32
Breitling

Navitimer 32

$8,100

Superocean Automatic 46 Super Diver
Breitling

Superocean Automatic 46 Super Diver

$6,950.00

Stainless Steel Conquest Chronograph
Longines

Stainless Steel Conquest Chronograph

$3,650

Two-Tone Spirit Zulu Time
Longines

Two-Tone Spirit Zulu Time

$4,550

Navitimer Automatic 41
Breitling

Navitimer Automatic 41

$5,200

Heritage Bicompax Annual
Carl F. Bucherer

Heritage Bicompax Annual

$11,600.00

Sub 300 Whitepearl
DOXA

Sub 300 Whitepearl

$2,550.00

SUPEROCEAN AUTOMATIC 46
Breitling

SUPEROCEAN AUTOMATIC 46

$5,500

Navitimer Automatic 41
Breitling

Navitimer Automatic 41

$5,300

Manero Central Counter Limited Edition
Carl F. Bucherer

Manero Central Counter Limited Edition

$8,400.00

Two-Tone Master Collection Moonphase
Longines

Two-Tone Master Collection Moonphase

$4,250

Manero Flyback
Carl F. Bucherer

Manero Flyback

$7,400.00

Manero Flyback Green
Carl F. Bucherer

Manero Flyback Green

$7,400

Super Chronomat B01 44
Breitling

Super Chronomat B01 44

$12,150.00

Superocean Heritage B20 Automatic 42
Breitling

Superocean Heritage B20 Automatic 42

$5,700

Superocean Automatic 42
Breitling

Superocean Automatic 42

$5,200.00

Stainless Steel Dolcevita
Longines

Stainless Steel Dolcevita

$3,500

Manero Autodate
Carl F. Bucherer

Manero Autodate

$14,500

Chronomat Automatic 36
Breitling

Chronomat Automatic 36

$13,200

Superocean Automatic 44
Breitling

Superocean Automatic 44

$5,250.00

Superocean Heritage B20 Automatic 44
Breitling

Superocean Heritage B20 Automatic 44

$7,300.00

Chronomat Automatic 36 Stainless Steel and 18k Red Gold
Breitling

Chronomat Automatic 36 Stainless Steel and 18k Red Gold

$9,300

Superocean Automatic 36
Breitling

Superocean Automatic 36

$5,350.00

Daytona White Dial Chronograph
Rolex

Daytona White Dial Chronograph

$24,900.00

Sub 300T Professional
DOXA

Sub 300T Professional

$1,990.00

Manero Central Counter
Carl F. Bucherer

Manero Central Counter

$8,400.00

Chronomat Automatic 36
Breitling

Chronomat Automatic 36

$9,950

Sub 200 Whitepearl
DOXA

Sub 200 Whitepearl

$1,090

Navitimer B01 Chronograph 43
Breitling

Navitimer B01 Chronograph 43

$39,700

Manero Flyback
Carl F. Bucherer

Manero Flyback

$7,700

Patravi Scubatec
Carl F. Bucherer

Patravi Scubatec

$9,600.00

Chronomat 32 Diamond Bezel White and Diamond Dial Stainless Steel Watch
Breitling

Chronomat 32 Diamond Bezel White and Diamond Dial Stainless Steel Watch

$8,200

Sub 200 Aquamarine
DOXA

Sub 200 Aquamarine

$1,050.00

Sub 300 Professional
DOXA

Sub 300 Professional

$2,590.00

Yacht-Master
Rolex

Yacht-Master

$13,945.00

Superocean Automatic 44
Breitling

Superocean Automatic 44

$5,450.00

Manero Flyback
Carl F. Bucherer

Manero Flyback

$7,700.00

Stainless Steel Conquest
Longines

Stainless Steel Conquest

$2,075

Stainless Steel Spirit Zulu Time
Longines

Stainless Steel Spirit Zulu Time

$3,150

Sub 300T Divingstar
DOXA

Sub 300T Divingstar

$1,950.00

Sub 300 Whitepearl
DOXA

Sub 300 Whitepearl

$2,590.00

Navitimer 32
Breitling

Navitimer 32

$4,800

Stainless Steel Spirit Zulu Time
Longines

Stainless Steel Spirit Zulu Time

$3,150

Manero Central Counter
Carl F. Bucherer

Manero Central Counter

$8,400.00

Navitimer Automatic GMT 41
Breitling

Navitimer Automatic GMT 41

$6,200.00

Pathos Diva Automatic Ladies Watch
Carl F. Bucherer

Pathos Diva Automatic Ladies Watch

$7,800

Sub 300 Aquamarine
DOXA

Sub 300 Aquamarine

$2,550.00

Sub 600T Aquamarine
DOXA

Sub 600T Aquamarine

$1,490.00

Chronomat Automatic 36
Breitling

Chronomat Automatic 36

$5,250.00

CHRONOMAT 32
Breitling

CHRONOMAT 32

$5,300

Bronze and Titanium Legend Diver
Longines

Bronze and Titanium Legend Diver

$3,125

Ladies 18K Yellow Gold Presidential Datejust
Rolex

Ladies 18K Yellow Gold Presidential Datejust

$12,500.00

Conquest Heritage Central Power Reserve
Longines

Conquest Heritage Central Power Reserve

$3,800

Stainless Steel Hydroconquest GMT
Longines

Stainless Steel Hydroconquest GMT

$2,975

Two-Tone Master Collection
Longines

Two-Tone Master Collection

$3,525

Manero Flyback
Carl F. Bucherer

Manero Flyback

$7,400.00

Sub 200 C-Graph Aquamarine
DOXA

Sub 200 C-Graph Aquamarine

$2,750

Stainless Steel Legend Diver
Longines

Stainless Steel Legend Diver

$2,500

Manero Central Counter
Carl F. Bucherer

Manero Central Counter

$8,400.00

Stainless Steel Dolcevita
Longines

Stainless Steel Dolcevita

$1,425

Classics Carrée Ladies
Frederique Constant

Classics Carrée Ladies

$1,495.00

Classic AVI Chronograph 42 Tribute To Vought F4U Corsair
Breitling

Classic AVI Chronograph 42 Tribute To Vought F4U Corsair

$5,800.00

Rose Gold Tone La Grande Classique De Longines
Longines

Rose Gold Tone La Grande Classique De Longines

$1,925

Heritage Bicompax Annual
Carl F. Bucherer

Heritage Bicompax Annual

$8,100.00

Stainless Steel Hydroconquest GMT
Longines

Stainless Steel Hydroconquest GMT

$2,975

SUPEROCEAN AUTOMATIC 44
Breitling

SUPEROCEAN AUTOMATIC 44

$5,450

Superocean Heritage B20 Automatic 46
Breitling

Superocean Heritage B20 Automatic 46

$5,800.00

Top Time B01 Deus
Breitling

Top Time B01 Deus

$8,250.00

Stainless Steel Master Collection Moonphase
Longines

Stainless Steel Master Collection Moonphase

$2,625

Two-Tone La Grande Classique De Longines
Longines

Two-Tone La Grande Classique De Longines

$1,800

SUPEROCEAN HERITAGE CHRONOGRAPH 44
Breitling

SUPEROCEAN HERITAGE CHRONOGRAPH 44

$6,900

Stainless Steel Conquest
Longines

Stainless Steel Conquest

$4,200

Navitimer Automatic 35
Breitling

Navitimer Automatic 35

$6,500.00

Superocean Heritage B20 Automatic 46
Breitling

Superocean Heritage B20 Automatic 46

$5,500

Chronomat Automatic 36
Breitling

Chronomat Automatic 36

$13,750.00

Manero Urban
Carl F. Bucherer

Manero Urban

$4,900.00

Chronomat B01 42
Breitling

Chronomat B01 42

$9,900.00

Avenger B01 Chronograph 44
Breitling

Avenger B01 Chronograph 44

$8,550.00

Superocean Automatic 46 Super Diver
Breitling

Superocean Automatic 46 Super Diver

$6,300.00

CLASSIC MOONPHASE MANUFACTURE
Frederique Constant

CLASSIC MOONPHASE MANUFACTURE

$2,595

ENDURANCE PRO
Breitling

ENDURANCE PRO

$3,400

Doxa Army
DOXA

Doxa Army

$2,250.00

Navitimer Automatic 41
Breitling

Navitimer Automatic 41

$5,500

Avenger B01 Chronograph 44
Breitling

Avenger B01 Chronograph 44

$8,250.00

Stainless Steel Conquest
Longines

Stainless Steel Conquest

$4,200

Slimline Ladies
Frederique Constant

Slimline Ladies

$2,995.00

Navitimer B01 Chronograph 46
Breitling

Navitimer B01 Chronograph 46

$9,650

Two-Tone Dolcevita
Longines

Two-Tone Dolcevita

$2,075

Sub 300T Sea Emerald
DOXA

Sub 300T Sea Emerald

$1,990.00

CHRONOMAT AUTOMATIC GMT 40
Breitling

CHRONOMAT AUTOMATIC GMT 40

$6,150.00

Stainless Steel Hydroconquest GMT
Longines

Stainless Steel Hydroconquest GMT

$2,775

Sub 200 Professional
DOXA

Sub 200 Professional

$1,050

Navitimer Automatic GMT 41
Breitling

Navitimer Automatic GMT 41

$5,850

NAVITIMER B01 CHRONOGRAPH 46
Breitling

NAVITIMER B01 CHRONOGRAPH 46

$10,050.00

CHRONOMAT B01 42
Breitling

CHRONOMAT B01 42

$8,950

CLASSICS CARRÉE
Frederique Constant

CLASSICS CARRÉE

$995.00

Super Chronomat B01 44
Breitling

Super Chronomat B01 44

$26,400

SUPER CHRONOMAT B01 44
Breitling

SUPER CHRONOMAT B01 44

$10,900.00

Navitimer Automatic 36
Breitling

Navitimer Automatic 36

$9,950.00

Classic Carrée
Frederique Constant

Classic Carrée

$4,195.00

Sub 200 Divingstar
DOXA

Sub 200 Divingstar

$1,050.00

Sub 300T Professional
DOXA

Sub 300T Professional

$1,950.00

Chronomat Automatic 36
Breitling

Chronomat Automatic 36

$9,950.00

Portofino Automatic
IWC

Portofino Automatic

$4,275

Patravi Scubatec Verde
Carl F. Bucherer

Patravi Scubatec Verde

$7,200.00

Superocean Heritage B20 Automatic 42
Breitling

Superocean Heritage B20 Automatic 42

$5,400

Manero Flyback
Carl F. Bucherer

Manero Flyback

$7,400.00

Sub 200 Sharkhunter
DOXA

Sub 200 Sharkhunter

$1,090.00

Endurance Pro 38
Breitling

Endurance Pro 38

$3,250.00

Patravi Scubatec
Carl F. Bucherer

Patravi Scubatec

$7,200.00

Manero Flyback Green
Carl F. Bucherer

Manero Flyback Green

$7,400.00

Superocean Automatic 42
Breitling

Superocean Automatic 42

$5,400.00

Manero Flyback
Carl F. Bucherer

Manero Flyback

$7,400

Navitimer 32
Breitling

Navitimer 32

$4,800.00

Endurance Pro
Breitling

Endurance Pro

$3,400

Chronomat B01 42
Breitling

Chronomat B01 42

$9,500.00

Superocean Automatic 44
Breitling

Superocean Automatic 44

$6,150.00

Endurance Pro
Breitling

Endurance Pro

$3,400

Navitimer Automatic 41
Breitling

Navitimer Automatic 41

$5,300.00

Endurance Pro
Breitling

Endurance Pro

$3,400

Chronomat B01 42 Stainless Steel
Breitling

Chronomat B01 42 Stainless Steel

$8,950.00

Sub 300 Beta Sharkhunter
DOXA

Sub 300 Beta Sharkhunter

$7,250.00

CLASSIC WORLDTIMER
Frederique Constant

CLASSIC WORLDTIMER

$4,195

Submariner Date
Rolex

Submariner Date

$18,500.00

Classics Index Automatic
Frederique Constant

Classics Index Automatic

$1,195.00

Sub 300T Sea Emerald
DOXA

Sub 300T Sea Emerald

$1,630.00

Avenger Automatic GMT 44
Breitling

Avenger Automatic GMT 44

$5,700.00

Two-Tone Dolcevita
Longines

Two-Tone Dolcevita

$2,150

Superocean Automatic 42
Breitling

Superocean Automatic 42

$5,200.00

Avenger Automatic 42
Breitling

Avenger Automatic 42

$5,050.00

Stainless Steel Master Collection Moonphase
Longines

Stainless Steel Master Collection Moonphase

$2,700

Sub 200 Whitepearl
DOXA

Sub 200 Whitepearl

$1,050.00

Sub 200 C-Graph II Caribbean
DOXA

Sub 200 C-Graph II Caribbean

$2,950.00

Stainless Steel Conquest Chronograph
Longines

Stainless Steel Conquest Chronograph

$3,750

Stainless Steel Spirit Zulu Time
Longines

Stainless Steel Spirit Zulu Time

$3,050

Manero Peripheral Blue Edition
Carl F. Bucherer

Manero Peripheral Blue Edition

$7,900.00

Patravi Scubatec
Carl F. Bucherer

Patravi Scubatec

$7,700.00

Classics Index Automatic
Frederique Constant

Classics Index Automatic

$1,195.00

Heritage Bicompax Annual
Carl F. Bucherer

Heritage Bicompax Annual

$9,500.00

Navitimer Automatic GMT 41
Breitling

Navitimer Automatic GMT 41

$6,200.00

AVI REF. 765 1953 RE-EDITION
Breitling

AVI REF. 765 1953 RE-EDITION

$9,050.00

Stainless Steel Spirit Zulu Time
Longines

Stainless Steel Spirit Zulu Time

$3,150