GP-1 Guitar Plug Headphone Amp:
Features:
1. Classic British Distortion.
2. AUX In Jack makes it easy to practice along with your audio player.
3. Two AAA batteries provide more than 40 hours continuous play time.
Specs:
Power supply: Two AAA batteries (Alkaline batteries are recommended)
Battery life: approx. 40 hours (Alkaline batteries), approx. 8 hours (Carbon batteries)
Dimensions: 100 (L) X 88 (W) X 23 (H) mm
Weight: 43g (Not including batteries)