4iiii Precision 3 Shimano R8100 Ultegra Power Meter

Whether you’re a pro or simply training hard, PRECISION left side power meters deliver industry-leading accuracy, highly dependable cadence data, 3D power meter technology capable of measuring tri-axial strain on your crank arm. Packaged into a durable, lightweight design and compatible with broad ANT+ and Bluetooth head units, PRECISION helps you train harder and smarter.

Features

• 3D power meter 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