From Fender:
Built with live performance reliability and aesthetic in mind, the Bullet Tuner provides a nonintrusive, staunchly accurate tool for musicians at every stage. A powerful engine with a noise-proof vibration sensor allows for precise chromatic tuning for electric, acoustic and bass guitar players alike—while a bright, color LED screen shows easy-to-see readings in any environment.
- Vibration-based tuning system
- LED color screen
- Strong clamp
- 10 minute auto sleep mode to preserve battery life
- Click the power button twice to wake up
- Tuning range: A (27.5Hz)–C (4186.0Hz)
- Precision: +/- 1 cent
- A4 range: 440Hz
- Power supply: 1.5V (LR44) lithium battery (included)
- Dimensions: 36.6mm x 14mm x 38.8mm, Weight: 13.5g