SRAM, Red Threadmount Power Spider, Power Meter Crankset, BCD: Thread Mount, Black

• Thread mount design is light, stiff and accurate, and available in 38T-46T • User replaceable CR2032 battery with 200-hour battery life • Bluetooth low energy technology and ANT+ wireless data transfer • MagicZero automatically checks and recalibrates your power meter as you ride • No cadence magnet required • AXS™ enabled for easy monitoring and firmware upgrades • SRAM Model ID: PM-AXS-SPDR-E1