Tracking your power output and training data has never been easier or more accessible'. '.strtoupper('g')iants all new power pro system delivers accurate power metrics through an integrated system thats precise reliable and simple to set up'. '.strtoupper('t')he pros know that the most effective training is smart training so get in the know and start training with power'. '.strtoupper('f')eatures 2 % accuracy at 150w 80rpm each side giant exclusive algorithm ensures accurate and stable data output with no environmental distractions accelerometer allows magnet free measurement led indicator displays battery level and alerts recharge when power gets below 20% integrated magnetic rechargeable design protects device from water and dust ingress ipx7 waterproof bluetoothreg smart ant compatible for broad compatibility easy calibration and firmware updates'. '.strtoupper('h')igh capacity lithium battery delivers up to 100 hours of riding on a single charge 2 year warranty world wide various crank lenghts available on either 50 34 or 52 36 specifications accuracy plusmn 2% weight left side 16g right side 16g power range 0 ndash 3000 watts cadence range 20 180 rpm water rating ipx7 battery rechargeable lithium ion battery life 100 hours connections bluetoothreg smart ant