Giant Power Halo Sr2

POWER UNLEASHED As professional coaches know compared to simply measuring heart rate which can easily be affected by environmental factors or personal physiological conditions using a power meter is the best way to gain metrics for training because the data given by direct force shows the real output from every pedal stroke. Features IPX7 waterproof anti-dust casing with a closed magnetic rechargeable design protects the PowerPro from water or dust while riding 107mm BCD for SRAM Force and Rival 4 bolt 1x or 2x chain rings High-capacity lithium battery delivers up to 150 hours of riding on a single charge Built-in magnetic connector makes recharging easy Green and red LED Indicators display connection and battery status Specifications Weight 155g (spider only) Size 125*125*200mm / 4.9*4.9*7.8 inch (L*W*H mm) Waterproof IPX7 Bolt Pattern 4 Bolt Bolt Circle Diameter (BCD) 107mm Chain Ring Compatibility 1x 2x Connections BLE/ANT+ Battery Type Lithium-ion Battery Run Time 100 Hours Battery Charge Time 1 hr Battery Life Indicator Yes Accuracy ± 1.5% Temperature Conpemsation Yes Left/Right Balance Yes Pedaling Efficierncy No Firmware Giant Ridelink Warranty 2 Years