Technical parameters:
Bluetooth protocol: 2.1+EDR
Transmission distance: ≥10 meters
Card reader: micro-SD (TF)
Frequency range: 150Hz-20kHz
Signal/noise ratio: >80dB
Driver: 4Ω, ?45mm
Rating power: 3W (with amplifier)
Audio-in: Bluetooth/?3.5mm audio jack
Audio-out: ?3.5mm audio jack (MP3 and Bluetooth mode)
Rechargeable battery: 800mAh lithium polymer
Battery voltage: 3.7V
Full charging time: 3-4hrs
Charging voltage: 5V
Power input: micro USB (5V/500mA)
Net weight: 118g
Unit dimensions: 68mm (D) x 64mm (H)
Highlights:
Bluetooth, MP3 and Line-in "three-in-one" speaker
Case changeable, it gives a different look every time
Engineered for exceptional clarity of sound
Powerful built-in amplifier for a surprisingly loud volume
Multi-unit connections is available
Two slots available for two earphone connections