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CoxBox® Mini


Rowing’s original waterproof timer-amplifier now has a little sibling with overmolded connectors for protection from wear and brightly colored rubber bumpers for durability and easy identification in the boathouse and at team events. Ideal for use with the SpeedCoach® GPS 2 for instantaneous stroke rate and split.

Availability: In stock

Compact, Affordable Voice-Only Amplifier: The CoxBox Mini provides voice-only amplification in a compact product designed to be used on its own or in partnership with NK performance measurement products. The affordable price point lets you purchase multiple Minis to meet your needs and gives Coxswains the option to own their own. Flexible Wearing Options Keep your Hands Free: The Mini is designed to be worn, keeping your hands free. A rugged rotating belt clip allows you to attach it to your clothes or gear bag strap, and the optional arm band is perfect for coxswains.

  • Perfect partner for other NK products
    • Mini + StrokeCoach® with Surge Rate = Great starting system
  • Flexible Wearing Options Keep your Hands Free
    • Belt clip on shorts
    • Clipped to bag strap
    • On optional arm band
  • Fully compatible with NK harnesses, speakers, new-style microphones, and chargers.
  • Personalize your Mini with protective bumpers in 12 colors.
  • Hours of Performance from Lithium Ion batteries (included). LED indicators show charge status at all times.
  • Mini comes with your color choice of a protective bumper and a black on/off dial (additional dial colors available).

Charger and Microphone are REQUIRED for operation! Works with standard or car style CoxBox chargers and the R2 connection microphone.

Included in Package
  • Belt Clip (rotating)
  • CoxBox Mini
  • CoxBox Mini Protective Bumper
Water ResistanceWaterproof (IP67, NEMA-6).
Control Unit Weight8 oz (226.8 g) for control unit and bumpe
Unit Weight1.5lbs (680.4 g) for complete system.
Unit Dimensions 3 x 7 x 2.25 in (76.2 x 177.8 x 57.15 mm).
Note: Control unit alone floats. Control unit with microphone attached does not float.
ControlsKnob (on/off/volume), 3 buttons with tactile response (start/stop/split/memory).
Battery TypeRechargeable battery, three Lithium Ion cells, 3-year life.
Battery Life Expectancy3 hours at typical use (3/4 of full volume, talking 50% of the time, using 3 speakers).
CaseInjection-molded polymer case, injection molded elastomeric bumper.
Warranty Period2 Year Warranty

CoxBox Instruction Manuals

CoxBox Maintenance Kit

CoxBox Mini Operation, Maintenance, Battery Use, Battery Charging, Battery Messages

CoxBox Panel Protector Installation Instructions

CoxBox Boat Wiring

Audio connection with one speaker lead and M connection.

SpeedCoach/StrokeCoach Troubleshooting Documents

Here is guidance on how to submit an order and sending a tax exempt form to apply to that order.

Product Questions

With increased airport security, traveling with your CoxBox is trickier than ever. We recommend you check the CoxBox in with your luggage. Include product literature that explains what the CoxBox is. Brochures can be obtained from NK, or product literature can be printed from the website. Another option that may work when traveling overseas is to ship your units through UPS. If you do so, be very clear that these are used units, being imported temporarily. Put a low replacement value on them, but do note that you run the risk of the replacement value being used for customs. VAT (tax) is quite expensive and if they decide to hold the units in customs until you pay you could be without your CoxBox for the race.

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