SRAM Power Meter Spider AXS E1 For Threaded Mount Chainrings - Red (Including 8 Bolts And Thread Back Up Pin For Chainring):

FEATURES

• Thread Mount design is light, stiff and accurate, and available in 38T-46T
• +/- 1.5% accuracy
• 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
• 10K Temperature Compensation
• Waterproof (IPX7 waterproof to 1 meter for 30 minutes)
• AXS™ enabled for easy monitoring and firmware updates