Bluetooth speaker with shutter function & anti-lost function

1) Bluetooth connect to mobile,PC,etc to play music in 10 meters distance              
2) as a shutter function:long press 3 seconds after connected bluetoth function
3) with handfree calling function
4)anti-lost function,alarm will be on when the Speaker and paired device exceed 10 meters

Power supply: DC 5V

Output: 2W (1KHz, THD10%)

Frequency: 120Hz-18KHz

Signal & noise ration: >60dB

Impedance: 4 OHM(Ω)

Li-ion output: 3.7V~4.2V+0.05V  

Li-ion input: 5V

Lithium battery capacity: 180mAh

Speaker unit: 23.8mm

Case material: ABS

Dimension: 27*27*29mm

Weight: 19g

Color: OEM

White box size: 5*5*6cm

Carton size: 57*27*26cm

QTY/CTN: 200pcs

N.W./G.W.: 3.8kgs/4.8kgs

Accessories: micro USB charging cable