Docooler Mini Hamburg Speaker for iPhone iPad iPod Laptop PC MP3 Audio Amplifier (Blue) …

Specifications:
Housing material: Plastic
Power supply: Rechargeable lithium battery
Battery voltage: 3.7V
Battery charging voltage: 4.2?.05V
Rating power: 1.8W
Frequency response: 100Hz, 20kHz
Signal-to-noise: ?85db
Distortion: <0.5% Dimension: Approx. 4 * 5.2cm / 1.57 * 2.05in (Height * diameter)
Speaker weight: 53g / 1.86oz
Package size: 9 * 8.5 * 4cm / 3.54 * 3.35 * 1.57in
Package weight: Approx. 93g / 3.27oz
Package includes:
1 * Mini Speaker
1 * USB Charging Cable
1 * User Manual