Solar blue tooth speaker

1 bluetooth specification BluetoothV4.2
2 wireless transmission distance of 10M
3 audio input bluetooth, TF card, AUX
4 audio performance supports MP3,WAV, FLAC, APE
5 audio SNR is greater than or equal to 75dB
The degree of distortion is no more than 0.1%
7 output power: 4.5w * 2
8 speakers F40mm, double magnetic core 4 Ω 16/5 w
Frequency response: 130Hz — 18KHz
10 working voltage: 3.0 — 4.2V
Standby current is less than 0.5mA
12 built-in battery lithium ion 1200mAh
13 charging specification 5V/1A
14 solar panels 5V/200mA