Includes left side gauged and right side non gauged.• Single sided version of the world renowned P1 pedal-based power meter
• Hightly advanced cycling power meter ever developed
• Easily swap between bike for a vast range of compatibility
• Power output is calculated by measuring power from the left side and doubles the value
• Upgradable to dual-side measurement
• Weight 1.18lbs
• L: 5.25" x 4" x 4.5"
• Connectivity: ANT+ and Bluetooth SMART
• Battery: AAA