• AXS™ enabled for easy monitoring and firmware upgrades
• Bluetooth Low Energy and ANT+ compatible
• Power readings are accurate within +/-1.5% and aren’t affected by climate conditions during a ride
• Power balance measures left and right legs separately
• Uses a common CR2032 battery that last for 200 riding hours and changes without tools
• Power-upgrade compatible with RED® and Force eTap AXS™ cranksets
• 8 bolt interface
• SRAM Model ID: PM-AXS-SPDR-D1