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: