With wireless Bluetooth2.1+EDR technology, AUX input, easy to connect the devices with Bluetooth function manually, Hands free function, answer calls right on it and holds a conversation through the built-in microphone. Small and Lightweight-8.3cm in diameter, thickness 4cm, even if women can hold it with just one hand.portable and easy for storage.It's zinc alloy base which can enhance the texture of the whole, but also reduce the frequency of loss of a good bass sinking protect bass. Waterproof, Dustproof Rated IP35, for perfect protection against Water and Dust. TPU tenacity exterior 0.16" high strength zinc alloy skeleton for ultimate supply perfect Shockproof. TPU Silicone overall sealed, control keys, external interface closely guarded Waterproof and Dustproof. Support TF card music playing, high capacity 32 GB of TF card with high quality audio files stored, play main MP3/WMA/WAV/FLAC/APE format audio files, good sound quality out of your expectation. Support Line in with built-in card reader to exchange data directly, automatic shutdown after suspension without operation for 10 minutes, skip songs and forward/back/pause/play and control voice volume from the speaker Broken-Free Design-Built-in Shockproof Case, Shock-Resistant Rubber Sleeve. Waterproof, dustproof and drop resistance.