This SIGEYI AXO Power Meter Spider is compatible with SRAM 3-bolt interface cranksets. 

Compatible with the below crank-arms only (removable spider only)

• Force 1 and Force 22
• Rival 1 and Rival 22
• RED 22
• S900 series

Specifications
Material: Aluminum Alloy
Accuracy: ±1.5%
Power Range: 0~2500W
Cadence Range: 30~220RPM
Operational Temperature: -20℃~50℃
Battery life: 120 hours (normal temperature)
Standby time: >1 year
Data transmission: ANT+，BLE
Waterproof Level: IP67
Firmware upgrades with the SIGEYI app
Measures: Power, Cadence, Left/right power balance
Zero/Calibration: Auto Zero
Function: Temperature compensation
Charge: Magnetic charge cable

Mfr Claimed Weight
115g