±1% Power Accuracy, 4 Data Function

The P505 Spider-based power meter offers four critical data points of measurement: power, cadence, left and right balance, and pedal smoothness. With years of power research and development of advanced algorithms, the measured data is sensitive and reliable, the power accuracy up to ±1%.

Easy Charging System, 200-hour Battery Life

With in-built batteries, the power meter is charged with magnetic chargers. Fully charged within 3.5 hours, the battery life can reach 200 hours of riding time.

SPECIFICATIONS: 

Weight (excluding stickers): 110g  
Power Accuracy: ±1%
Power Range: 0-2500W
Cadence Range: 20-240RPM
Data Functions: Power, Cadence, Left-right Balance, Pedal Smoothness
Calibration: Auto-calibration, Reverse0chain Calibration, Manual Calibration
Wireless Interface: ANT , Bluetooth
Waterproof Grade: IPX7
Working Temperature: -10-50 ℃
Power Supply Mode: Magnetic Base Rechargeable Lithium
Battery Endurance: 200h riding time

COMPATIBLE CHAINRINGS:

P505-S1108 / R110X / S1103: Shimano 110BCD 4-arm chainring; Sram, Rotor, FSA, etc. 110BCD 5-arm chainring
P505-S1078: Sram 107BCD 4-arm chainring Compatible Crank Arm
P505-S1108 / S1078: Sram 8-bolt crank arm (with Sram Red AXS, Force AXS, Red 22, and Quarq, etc.)
P505-S1103: Sram 3-bolt crank arm (with SRAM Force 22, Rival 22, S-900 etc.)
P505-R110X: Rotor Aldhu, Vegast etc. 45-tooth crank arm