The spider design uses a proprietary thread-on chainring mount system which reduces weight without compromising reliability. A dual sided power measurement system calculates total watts. It’s subtle, lightweight, and boasts unbeatable battery life. It is also compatible with the Flight Attendant system, allowing for total connectivity between all AXS enabled components. No-compromise, high-performance data delivery giving you an edge over the competition.FEATURES Compatible with all Eagle Transmission 8-Bolt cranks. Compatible with Flight Attendant. +/- 1.5% accuracy. User replaceable CR2032 battery 200-hour battery life. Bluetooth low energy technology and ANT+ wireless data transfer. Waterproof (IPX7 waterproof to 1 meter for 30 minutes). AXS™ enabled for easy monitoring and firmware upgrades SRAM Model ID: PM-AXS-SPDR-D2 Attributes BCD Thread Mount Connectivity ANT+, BT LE
