Qalvin Legacy is for previous generation power meters that feature ANT+ ONLY. Use Qalvin Legacy with the below power meters.
| Legacy Power Meters | Qalvin BLE | Qalvin Legacy |
| ELSA R | No | Yes |
| ELSA RS | No | Yes |
| RIKEN AL | No | Yes |
| RIKEN R | No | Yes |
| SRAM RED | No | Yes |
| SRAM XX1 | No | Yes |
| Quarq For Cannondale | No | Yes |
| Quarq For Specialized | No | Yes |
| CR2450 battery models | No | Yes |