Pedal-type power meter using adapter for Shimano pedal body, and a power sensor on the left and right pedal axis. (Axles are sold only. Pedal body is not included) Compatible with Shimano PD-R8000/PD-R7000/PD-6800/PD-R550/PD-R540. Axle Single Side Weight: 3.9 oz (99.0 g), One side weight when installed on PD-R8000, 6.0 g, Q Factor 2.6 inches (65 mm), Adapter Material: Aluminum Alloy, IAV Cycling Dynamics: Compatible, Compatible with Oval Chainring Support, Assioma DUO-Shi Weight (excluding pedal): 3.0 oz (99.0 g) on one side (including batteries), Assioma DUO-Shi+ g) R8000 Total weight of pedal body: 157.0 g per side (including battery), Adapter material: Aerospace aluminum alloy, Battery type: Rechargeable lithium battery, Battery : 50 hours or more, Wireless communication: Bluetooth v4.0, ANT+ PWR profile (CT + PO), Power measurement accuracy: ±1%, Temperature compensation: Yes (temperature range -10°C / +60), Waterproof protection class: IP67, Q factor: +65mm, use Bike Type: Road, Country of Origin: Italy. Attention! We do not compensate for installation or disassembling the pedal axle of this product in case of failure or failure. In addition, we are not responsible for any damage caused by incorrect installation or use. It may also be removed from the warranty. Accessories: Left power sensor with adapter for Shimano pedal body, right power sensor with adapter for Shimano pedal body, battery charger (includes plug) 2 micro USB/USB cable with 2 magnetic connectors, 4 hex wrenches and washers, Assioma user manual, Assioma DUO-Shi user manual, **card