For riders who want to perform at their maximum and therefore get everything out of their training, the accuracy and reliability of the RED XPLR AXS Powermeter is the way to go. Its special spider design uses a patented thread-on chainring system for lower weight and higher stiffness, without compromising the ability to change a chainring. A dual-sided power measurement system is accurate to within +/-1.5%, even when weather conditions change rapidly, and offers unparalleled battery life. Thread Mount Design is light, stiff, and accurate +/- 1.5% accuracy. User-replaceable CR2032 battery with 200-hour life. Low-energy Bluetooth technology and ANT+ wireless data transfer. MagicZero checks and recalibrates powermeter while riding. No cadence magnet needed. 10K temperature compensation. Waterproof (IPX7 waterproof to 1 meter for 30 minutes). AXS™ Enabled for easy monitoring and firmware updates. Sram Article number: 735717 EAN code: 710845904783