MEMTEQ Portable Bluetooth Handsfree Wireless Stereo Speaker FM For iphone Samsung (Grey) Bluetooth transmission power: Class2 4dBm Support bluetooth protocol A2DP, AVRCP, GAVDP, IOPT, OPP, SPP. Wireless Bluetooth Speaker with excellent sound quality for its size. With a range of over 30 feet, you will have the extra room to walk around your house and always being connected. Audio decoding supports MP3, WMA, WAV, AMR, Lossless audio formats FLAC, APE. Recording supports MP3 and WAV. TF card maximum capacity: 32GB (card is not included). Built-in 400mAh li-ion battery, so don't have to waste some of that hard earned cash. With a charge time of only 2-3 hours, the speaker lets you know when it is fully charged. AUX input: 3.5mm audio head; so you can use a computer, MP3 player or anything you have and jam out with no problem.