Description‎:‎ You can use this speaker by two ways ‎(‎Bluetooth connection & audio cable connection‎)‎‎.‎ Besides‎,‎ the product can connect two devices at the same time‎.‎ What‎'‎s more‎,‎ built‎-in HD microphone‎,‎ it supports hands‎-free calls‎.‎ Features‎:‎ 1‎.‎ Fashion design‎,‎ made of PVC material‎.‎ 2‎.‎ Built‎-in operation voice prompt function‎.‎ 3‎.‎ Automatically convert between music function and telephone function‎.‎ 4‎.‎ Support for iOS ‎(‎Apple‎)‎ system‎,‎ with electric quantity display function‎.‎ 5‎.‎ With external AUX sound source playback function‎,‎ compatible with mobile phones‎,‎ Walkman‎,‎ tablets‎,‎ computers etc‎.‎ 6‎.‎ Built‎-in noise reduction HD microphone‎,‎ a button to answer a call‎,‎ support hands‎-free calls‎.‎ 7‎.‎ Support simultaneously connecting two devices‎.‎ 8‎.‎ Support NFC near field communication function‎,‎ gently touch to quickly pair‎,‎ or disconnect ‎(‎Your phone or tablet must have built‎-in NFC function‎)‎‎.‎ 9‎.‎ The silicone pad on bottom is effective anti‎-skid‎.‎ Specifications‎:‎ Bluetooth version‎:‎ Bluetooth V4.1 + EDR Channel system / program‎:‎ Mono 3W / Vimicro Battery capacity‎:‎ lithium battery 3.7V‎,‎ 600mAh Product size‎:‎ 83 * 83 * 43mm / 3.27 * 3.27 * 1.65inch Product color‎:‎ black+orange‎,‎ black+blue‎,‎ black ‎(‎optional‎)‎ Package weight‎:‎ 254g Charging time‎:‎ 3‎-4 hours Talk time‎:‎ > 10 hours ‎(‎90% of volume‎)‎ Music time‎:‎ 5 hours  ‎(‎60% of volume‎)‎ Support agreement‎:‎ A2DP‎,‎ AVRCP‎,‎ HSP‎,‎ HFP Input standard‎:‎ Micro USB‎,‎ DC5V‎,‎ 500mA‎-1000mA Bluetooth operating frequency‎:‎ 2.402GHz‎-2.480GHz Best call distance‎:‎