LDNIO 1500 mAh Bluetooth 5.0 Wireless Speaker [ BTS12 ] Features # Bluetooth 5.0 4X range, 8X data, better Sound Quality # Built-in 1500mAh Li-polymer battery, support 4h music playing time # Bass boost, better listening experience. # Support SD card, automatically decode normal audio form Product Real bluetooth 5.0 4X range, 8X data, bring better Sound Quality. Built-in Li-polymer battery Support 4h music playing time and charding out as power bank. Bass boost Designed in accordance with professional audio, bringing better listening enjoyment. Multiple function 3 connecting method like bluetooth, AUX, SD card, with 4 multiple operating buttons. Specs Model BTS12 INPUT DC 5V1A Compacity 1500mAh/3.7V/5.55Wh Total Output 5V/1A 5W AMP Power 5W Blue tooth Protocol HSP/HFP/A2DP/AVRCP Carrier Frequency 2.402-2.480GHz Transmission distance >10M Frequency response F0-20KHz Horn sensitivity 85dB For More Info. Click Here For More Ldnio Product Click Here