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SKU family: 0103
The World's #1 Voice for Coxed Boats −
Get loud and clear audio amplification and instant performance feedback from your crew

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Cox Box

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CoxBox Overview

Make better calls.

Motivate a faster crew.

Make sure every word is heard from bow to stern.

Control the pace of the boat. Monitor the stroke rate. Motivate your crew. And when you’ve finally reached the point of exhaustion, dig deep, push beyond and rely on your CoxBox to tell you the precise moment to make the call that brings your crew to victory.

Cox Box Product Diagram



The coxswain is the voice of the boat. If that voice can’t be heard, your crew can’t execute your race plan. Your commands must cut through the noise right to the ears of your crew. Make sure your words are heard from bow to stern. Depend of the audio amplification of the CoxBox to help keep your crew focused, motivated and hungry for the win.


You need accurate information to control the pace of the boat and to make the calls necessary to help your crew keep cadence. The CoxBox provides accurate and immediate performance monitoring, including stroke rate, stroke count and elapsed time. In order to be a good communicator, you need dependable and reliable data at the precise moment you’re making a call.

Redesigned according to YOUR requests: switch and replace batteries in seconds and see your charge remaining. Wrap-around bumpers make your CoxBox yours, and darn near indestructible!


The CoxBox automatically stores stroke rate every 10 seconds, up to 60 minutes. Stroke rate, stroke count and elapsed time can also be manually stored at any time by pressing the “Store/Split” button.   


Includes: Protective rim and can bumper in personal choice of color, hand/shoulder strap and removable/rechargeable battery pack.

SKU: 0103

**Please note -- this is the UNIT WITH BATTERY AND BUMPERS ONLY. Any microphones, chargers or carrying cases MUST BE PURCHASED SEPARATELY. If you have an original style charger, it will work with the new unit, but you WILL need to buy a new microphone. The connections are not compatible.

Don't forget -- you can trade in your old CoxBox towards a new one and receive a credit of $100 towards the purchase under our Customer Care Discount Program.


  • Detailed Memory Recall
  • Stroke Count
  • Stroke Rate
  • Elapsed Time


  • 3-Button Control
  • Battery Life Indicator
  • Hand/Shoulder Carry Strap
  • Lightweight & Durable
  • Rechargeable Batteries
  • Top & Bottom Protective Bumpers

Who's Using the CoxBox

  • Coaches & Athletic Trainers
  • Rowing

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To compare functionality of units, please visit our full Product Function Comparison Chart.

Chronograph: 00:00.00 to 59:59.99 with auto roll-­‐over, 1/100th sec. resolution.

Stroke Rate: Rate input from seat sensor, autostart with first stroke, 10-127.5 SPM range, 1/2 SPM resolution.

Stroke Count: Rate input from seat sensor, autostart with first stroke, 0 to 999 with auto roll-over, 1 stroke resolution.

Memory: Stroke rate automatically stored every 10 seconds, up to 42 minutes and 40 seconds stroke rate, count and time can be manually stored at the press of a button.

Display: High-contrast monochrome LCD.

Backlight: Blue/green electroluminescent backlight, auto-on.

Case: Injection-molded polymer case, acrylic lens, injection-molded elastomeric bumper.

Controls: Knob (on/off/volume), 3 buttons with tactile response (start/stop/split/memory).

Battery: Three cell lithium polymer rechargeable with on-board fuel gauging. Full battery specs can be found here under the "Specifications" tab.

Charging: 930 mAh, 10.3 Wh. Performance capacity varies greatly with volume and quantity of speech as well as number of speakers.  3 hours expected in Cox Box with 3/4 volume, talking 50% of the time, using 3 speakers.  As much as 10 hours with more intermittent use, such as with Blue Ocean Megaphone.

Life Expectancy: 3 hours at typical use (3/4 of full volume, talking 50% of the time, using 3 speakers).

Temperature: Charging: 32 to 113°F | 0 to 45°C; Operating & Storage: -4 to 113°F | -20 to 45°C.

Size: 4 in x 4.5 in  (tall x diameter) (101.6 x 114.3 mm).

System Weight: 20 oz (567.09 g) for control unit, battery pack, bumpers; 4oz (113.4 g) for battery pack; 2lbs (907.2 g) for complete system for 8+ with 3 speakers.

Water Resistance: Waterproof (IP67, NEMA-6).

Buoyancy: Control unit with battery pack installed and microphone attached floats. Control unit alone floats. Battery pack does not float.

Warranty: Two-year warranty on entire system. Extended Customer Trade-in warranty for unit only.


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