CoxBox® Rowing Performance Amplifier
The NK CoxBox® Rowing Performance Amplifier combines reliable and powerful voice amplification with stroke rate and timing for coxed rowing shells. The advanced CoxBox GPS model adds the speed or split of the boat as well as distance covered, workout timing, performance review, and location and performance streaming using the NK LiNK Logbook App and a mobile phone. Select just the CoxBox system components you need from this listing, or follow these links to equip your favorite coxswain with a complete CoxBox GPS or CoxBox Core system at a discount. Don’t forget to trade-in your older CoxBox unit for a discount if you have one!
Sound + Vision

CoxBox Core
Completely redesigned, CoxBox Core retains the main functions that coxswains have come to rely on, and surrounds them in a more powerful, efficient, streamlined form.
The CoxBox Core features a host of innovations including:
Easy to read display
A single-piece faceplate and large, easy to read display provide a more rugged and waterproof design.
Waterproof interface
Buttons are precisely located and sealed from the elements, reducing the potential for water to enter the unit. The lower profile design takes up less volume.
Longer battery life
New cylindrical battery design provides 10+ hours of battery life with a more reliable, sustained charge.
Wireless Stroke Rate
No more dealing with sensors or magnets.
Monoblock™
Monoblock™ connector port relocates microphone, speaker/charging and data ports away from the face of the unit, creating better readability and simplified serviceability.
Stablesocket™
Stablesocket™ design prevents rotation and bending of plug inserts, which protects pins and sockets from damage.

CoxBox GPS
CoxBox GPS combines the most popular features of our world-class SpeedCoach GPS and integrates those capabilities directly into the new CoxBox architecture. In addition to all the features of the CoxBox Core unit, CoxBox GPS features:
» Speed (GPS)
» Memory
» Cumulative Splits
» Distance per Stroke
» Instantaneous split speed
» LiNK Logbook™ integration
» Rapid Charging Smart Accessory
» Planned future integration with SMART modules, such as seat displays, impeller pod, and integrated boat lights

CoxBox GPS + NK LiNK Logbook
A Better Way to Store and Analyze Your Workouts
CoxBox GPS is designed to interface with NK LiNK Logbook, our new cloud-based workout analysis platform. Using the free App on your mobile device, you can upload workouts to a free, private account and then use the tools provided to store and analyze workout sessions.
CoxBox GPS can be used with NK LiNK Logbook's Team accounts, which offer wireless streaming to the cloud, privacy settings for anonymous workouts, and simultaneous data comparison between boats (or even seats!). Visit NK LiNK Logbook for more information.
| CoxBox GPS | CoxBox Core | CoxBox | |
|---|---|---|---|
| Display Type | High contrast, sunlight readable monochrome liquid crystal display with 400 x 240 resolution and large, clear numerals. | High contrast, sunlight readable monochrome liquid crystal display with 400 x 240 resolution and large, clear numerals. | High contrast monochrome LCD |
| Display Size | 3.6" x 2.6" x 1.2" (92 x 67 x 31 mm) |
3.6" x 2.6" x 1.2" (92 x 67 x 31 mm) |
2.75" x 1.5" |
| Battery Life | 10+ hours | 10+ hours | 4 hours |
| Charging Time | Standard Charger: 12 hrs. Espresso Charger™: 4 hrs. |
Standard Charger: 12 hrs. Espresso Charger™: 4 hrs. |
Overnight |
| Performance Tracking Measures | Audio Wireless Stroke Rate Elapsed Time Speed (GPS) Memory Cumulative Splits Date Distance per Stroke Instantaneous Split Speed |
Audio Wireless Stroke Rate Elapsed Time |
Audio Stroke Rate Elapsed Time Memory |
| Dimensions | 3.20" tall x 4.4" diameter | 3.20" tall x 4.4" diameter | 4" tall x 4.5" diameter |
| Weight | 1lb 6.1 oz | 1lb 6.1 oz | 1lb 5.2 oz |
| Waterproof | Waterproof (IP67, NEMA-6) | Waterproof (IP67, NEMA-6) | Waterproof (IP67, NEMA-6) |
| Buoyancy | Floats | Floats | Floats |
| Real-time LiNK Streaming to Cloud (BLE) | ✔ | × | × |
| Connects to Integrated Smart Impeller Pod (Coming Soon) |
✔ | × | × |
| Connects to Smart Seat Display (Coming Soon) |
✔ | × | × |
| Connect to Smart Integrated Lighting System (Coming Soon) |
✔ | ✔ | × |
| Connects to Espresso Charger™ Rapid Charging Module | ✔ | ✔ | × |
| Warranty Period | Two Year | Two Year | Two Year |
| Display Type | |
|---|---|
| CoxBox GPS | High contrast, sunlight readable monochrome liquid crystal display with 400 x 240 resolution and large, clear numerals. |
| CoxBox Core | High contrast, sunlight readable monochrome liquid crystal display with 400 x 240 resolution and large, clear numerals. |
| CoxBox | High contrast monochrome LCD |
| Display Size | |
| CoxBox GPS | 3.6" x 2.6" x 1.2" (92 x 67 x 31 mm) |
| CoxBox Core | 3.6" x 2.6" x 1.2" (92 x 67 x 31 mm) |
| CoxBox | 2.75" x 1.5" |
| Battery Life | |
| CoxBox GPS | 10+ Hours |
| CoxBox Core | 10+ Hours |
| CoxBox | 4 Hours |
| Charging Time | |
| CoxBox GPS | Standard Charger: 12 hrs. Espresso Charger™: 4 hrs. |
| CoxBox Core | Standard Charger: 12 hrs. Espresso Charger™: 4 hrs. |
| CoxBox | Overnight |
| Performance Tracking Measures | |
| CoxBox GPS | Audio Wireless Stroke Rate Elapsed Time Speed (GPS) Memory Cumulative Splits Date Distance per Stroke Instantaneous Split Speed |
| CoxBox Core | Audio Wireless Stroke Rate Elapsed Time |
| CoxBox | Audio Stroke Rate Elapsed Time Memory |
| Dimensions | |
| CoxBox GPS | 3.20" tall x 4.4" diameter |
| CoxBox Core | 3.20" tall x 4.4" diameter |
| CoxBox | 4" tall x 4.5" diameter |
| Weight | |
| CoxBox GPS | 1lb 6.1 oz |
| CoxBox Core | 1lb 6.1 oz |
| CoxBox | 1lb 5.2 oz |
| Waterproof | |
| CoxBox GPS | Waterproof (IP67, NEMA-6) |
| CoxBox Core | Waterproof (IP67, NEMA-6) |
| CoxBox | Waterproof (IP67, NEMA-6) |
| Buoyancy | |
| CoxBox GPS | Floats |
| CoxBox Core | Floats |
| CoxBox | Floats |
| Real-Time LiNK Streaming to Cloud (BLE) | |
| CoxBox GPS | ✔ |
| CoxBox Core | × |
| CoxBox | × |
| Connects to Integrated Smart Impeller Pod (Coming Soon) |
|
| CoxBox GPS | ✔ |
| CoxBox Core | × |
| CoxBox | × |
| Connects to Smart Seat Display (Coming Soon) |
|
| CoxBox GPS | ✔ |
| CoxBox Core | × |
| CoxBox | × |
| Connects to Smart Lighting System (Coming Soon) |
|
| CoxBox GPS | ✔ |
| CoxBox Core | ✔ |
| CoxBox | × |
| Connects to Espresso Charger™ Rapid Charging Module | |
| CoxBox GPS | ✔ |
| CoxBox Core | ✔ |
| CoxBox | × |
| Warranty Period | |
| CoxBox GPS | Two Year |
| CoxBox Core | Two Year |
| CoxBox | Two Year |
| Specifications | |||
|---|---|---|---|
| Included in Package |
| ||
| Warranty Period | 2 Year Warranty | ||
| Measurements | |||
|---|---|---|---|
| Metric | Units | Range | Notes |
| Chronograph | 00:00.00 | 00:00.00 - 59:59.99 | Auto roll-over at 1 hour. 1/100th sec. resolution. |
| Stroke Count | 000 | 0 - 999 | Rate input from seat sensor, auto start with first stroke, auto roll-over at 1000 strokes |
| Stroke Rate | 000 ½ | 10 - 127 ½ | Rate input from seat sensor, auto start with first stroke |