1. Metal sense design;portable, hanging portable design;
2. .Bluetooth wireless audio transmission,ariety of classic color for choice,with phone handsfree,computer speaker
3.Support Bluetooth audio input , AUX , TF , Mic , phone calling
4.Frequency Response: 280Hz-16KHz
5.THD: ≤ 0.1% (3.7V/1KHz/1.8W)
6.Bluetooth version 2.1 , signal range 10 meters
7.Speaker: 4Ω 3W
8.Sensitivity: 450mV
9.Separation: ≥ 88 dB
10.Signal to Noise Ratio: ≥ 90 db
11.Charge voltage: DC 5V
12.Operating voltage:DC 3.7V
13.Battery capacity: 520MA
14. dimension : 60 mm*60 mm * 60 mm
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