Overtone Labs Tune-Bot Gig DrumTuner

Pitch adjustment on every tuning screw/tuning block
Measurement and adjustment of the basic tone of the drum
Tuning in intervals of single toms to each other
Repeatability of the "sound optimized setting" of each drum

Tuning range: 30-400 Hz, 1C-4G
Frequency resolution: ± 0.5 Hz
Response time: 750 mSec
Power supply: 2 AAA batteries
Dimensions: 10 × 5.9 × 5.5 cm.
Weight: 70g (without batteries)