Features
3D powermeter technology (patent pending) measures tri-axial strain on your crank arm
Accurate, consistent data
Lightweight, compact design
Battery status indicator via 4iiii app
Compatible with ANT+, Bluetooth Smart head units, smartphones, and other 4iiii products
User-friendly app and configurable rider compensation scale factor
Easy setup and maintenance

Specifications
Weight: 9 grams
Data accuracy: +/- 1% error margin
Battery life: 100+ riding hours on 2032 coin cell battery