Feature: Fashion Round Design. Ideal for carrying outdoors and as gift Bluetooth Wireless Connection Built-in 4000mAh rechargeable battery up to 6-8 hours playtime and gives you the convience of playing music anywhere at your home Deep bass from dual passive radiators Amazing audio performace delivering authentic sound. Technical specification: 2x6w Frequency response: 100Hz-18KHz 3.5mm Aux-in Surpport MP3, WAV format Support TF Card Long Transation distance: 15m Specification: Bluetooth V4.1 Power: External USB 5V supply Working voltage: 3.2V-4.2V Charging voltage: 5V 1000mAh Frequency: 100Hz-18KHz SNR:>=85Db Sensitivity Rate: 80db THD: <=0.3% Speaker: 52mm 4Ω 20corn RMS: 6W*2 Music Format: MP3,WAV Speaker Size: 205*57mm Package Content: 1 X Bluetooth Speaker 1 x Sound stent 1 x usb charger cable 1 x Specification 1 X Retail box 1 X AUX cable 1 x Leather straps