1. Clear blue LCD
2. A4 calibration:430-450Hz
3. Tuning items: Chromatic, Guitar, Bass,Ukulee,Violin
4. Pick-up mode:Clip
5. Tolerance: ±1cent
6. Weight:29g Dimension:96*23*63mm
7. Energy-saving mode: after 3 minutes of no activity, the T-20 shuts down
8. Power supply:CR2032 Li-on battery
