GIANT Halo SR2 Spider With Power Meter

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 Power Pro 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 - 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 Compensation: Yes - Left/Right Balance: Yes - Firmware: Giant Ride link