Assioma Duo-Shi - L and R - used for 2 seasons.

Features:
- Left (L) and right (R) pedal axle for the DUO model
- Measurement deviation/accuracy: 1%
- Battery: Rechargeable lithium battery, up to 50h of use, USB charging
- Power measurement range (Watt): 0-2000 W
- Cadence measurement range (rpm): 30-180 RPM
- Contents: right axle with sensor
- Other: ANT+, Bluetooth

The price is of course negotiable.