- A4 range：440Hz
- Detection method：Clip
- Tuning range：A0(27.5Hz)~C8(4186Hz)
- Tuning mode：Chromatic, Auto
- Tuning precision：±1cent
- Power supply：3V(CR2032)Lithium battery
The Cherub WST-640C is an auto-on chromatic tuner. Its auto power is on when the tuner head stands up, its auto power is off when the tuner head falls down, and its auto power is off in 5 minutes if there is not any input signal.