Ridden by the pros, PRECISION PRO dual-side power meters deliver all the benefits of our left-side model (exceptional accuracy, lightweight design, ANT+ and Bluetooth compatibility, 3D powermeter technology), plus a specific breakdown of left and right wattage. Perfect for those who need specific power output from each crank side, or anyone who simply wants the best power meter on the market.

Key Features:

• 3D power meter technology (patent pending) measures tri-axial strain on your crank
• 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
• Over-the-air upgrade capability for adding new features and updates

Specifications:

• Weight: 25 grams (power meter only)
• Data accuracy: +/- 1% error margin
• Battery life: 100+ hours on 2032 coin cell battery
• Battery status indicator: Alert at 15% battery power

Display Compatibility:

Android Apps:

• CatEye Cycling
• Endomondo
• Strava
• Wahoo Fitness: Workout Tracker
• Plus other apps supporting Bluetooth Smart/LE bike power devices

Cateye:

• Stealth EVO+
• Stealth 50
• Strada Smart
• Padrone Smart
• Padrone Smart+

Garmin:

• Edge 500
• Edge 510*
• Edge 520*
• Edge 800
• Edge 810*
• Edge 820*
• Edge 1000*
• Edge Explore 1000*
• epix*
• Forerunner 310XT
• Forerunner 910XT*
• Forerunner 920XT*
• fenix 2*
• fenix 3*
• fenix 3 HR*
• *These Garmin devices are recommended as they provide dual-related power metrics such as left-right balance percentage

iOS Apps:

• CatEye Cycling
• Endomondo
• Strava
• TrainerRoad
• Wahoo Fitness: Workout Tracker
• Plus other apps supporting Bluetooth Smart/LE bike power devices

Polar:

• M450
• V800 BTLE
• Please note the Polar V650 is not compatible

Suunto:

• Ambit3 Sport (Bluetooth)

Occasionally, without notice, manufacturers change product design and/or specifications.