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1. Speaker Spec:Output Power: 3W
Input Voltage: 5V
Built-in lithium battery spec: 3.7V/2200MAH
Impedance for speaker:4 ohm.
Frequency range: 20Hz to 20kHz
S/N ratio:>80dB
THD:<0.5%
Charging period:8~12 hours
Working period: 8~12 hours
Power Supply: Built-in lithium battery or USB cable
Audio Socket:3.5mm stereo jack
Audio Source: PC/Notebook/ MP3/ MP4/Mobile phone, etc
2. Power Bank Spec:
Power capacity:2200MAH
Output :5V/500MAH
Input: 5V/500MAH
Conversion efficiency:90%
Safety Voltage:3V
3. Flashlight Spec:
Led light spec:1W/100lm
Light distance:200m
4. Product Spec:
Working temperature: -10?~+50?
Material: Aluminum alloy
Dimension: 140*37*37mm
Net weight:235g
