Mushroom Wireless Bluetooth Stereo Speaker gives you experience of purer and better sound quality with built-in 45mm diameter and Bluetooth technology.It can play music through Bluetooth and TF card. It supports hands-free calls， redial last incoming calls and number reporting. It has 1-2 hours standby time. What's more， LED can be changed under ON mode as you like. Portable design is suitable at home， home office， bedroom and parties， ect.  Features:  With Bluetooth 2.1 technology and built-in 45mm diameter， it makes sure perfect sound quality.   Compatible with almost all Bluetooth-enabled mobile devices such as， for iPhone6 6Plus 5S， for Samsung Galaxy S5 S4 S3 / Note 4 3 2， for HTC One， Tablet PC， Laptop， etc. What's more， it's compatible with MP3 / 4 / 5 and desktop as speakers.  Super easy and fast paring with your smartphone or other Bluetooth device for high-fidelity stereo music， movies and chatting.  With built-in high capacity polymer battery 3W output power， it has 1-2 hours standby time.   Support hands-free calls and redial last incoming calls. In phone mode， device will announce the incoming phone number.  Support TF card.  LED can be changed under ON mode as you like.  It’s suitable at home， home office， bedroom and parties， ect.  Specifications:  Type: Speaker  Bluetooth Version: 2.1+EDR  Bluetooth Protocol: A2DP / AVRCP / HFP  Bluetooth Working Distance: 15M (free space)  Output Power: 3W  Frequency Response: 150HZ-18KHz  Distortion: <= 0.1%  Sensitivity: 85db  Working Voltage: 3.7V-4.2V  SNR: >=90dB  Speaker Diameter: 45mm 4ohm 3W  Built-in polymer battery: 400MAH  Charging Input: DC5V / 1A  Charging Time: 1-2 hours  Playback Time: 1-2 hours  TF Card Support Format: MP3 / WMA / WAV / APE / FLAC  Color: Black， White (Optional)  Speaker Size: Approx.9.5 * 9.5 * 9.1cm / 3.74 * 3.74 * 3.58in   Speaker Weight:  Approx. 149g / 5.23oz  Package Size: Approx.11.5 * 9.7 * 9.5cm / 4.53 * 3.82 * 3.74in               Package Weight: Approx. 231g / 8.17oz  Package List:  1 * Speaker  1 * USB Cable  1 * Audio Cable  1 * User Manual (English)