Spider Power Meter

SRM: Power Meter Spider

Auto Zero/Auto Calibration

Accurate and stable

±1.5% accuracy accurate

Quarq: measuring both legs

Stable auto zero

Quarq: automatic calibration as you ride. No need to back pedal or manually calibrate through your headunit

Dual data transmission ANT+ BLE

Quarq: Bluetooth low energy technology and ANT+ wireless data transfer.

Magnetic rechargeable lithium battery



Quarq: change without tools

Real time temperature compensation

120h long time operation

3 key data: Power, Cadence, Left/right power balance

A wide range of Compatibility: SRAM (ROAD AND MOUNTAIN), ROTOR, Specialized...

Compatible with many chainrings: crankset original chainrings, shimano chainrings, oval chainrings



Quarq: swap chainrings without affecting accuracy.

Quarq: no cadence magnet required



Multiple technical support, ±1.5% accuracy is not just words

Auto zero without any manual operation, no longer to do zero reset by hand

Real-time temperature compensation: Although the temperature suddenly changes, it is still accurate



Data transmit in ANT+ and BLE at the same time, compatible with a variety of head units

ANT+: Cycling computer, cycling watch, computer (Garmin, Bryton, Igpsport, ...)

BLE: Smartphone, pad (Zwift , Strava , SIGEYI app)