Features :1.Full， High-Def Sound: Enjoy an impressively full sound quality and robust bass realized through a 3W audio driver and passive subwoofer.2.Perfect sound quality and effect， when you go out to enjoy unfettered music anywhere stereo Bluetooth transmission.3.Incredibly Compact: This ring box-sized bluetooth speaker fits easily into your jacket pocket or the small side pocket of your backpack.4.Waterproof IP65， Dustproof， Anti-scratch， Shockproof，Rechargeable， suitable for both indoor and outdoor exercise.5.Aux in function support all digital audio device with 3.5mm jack， such as iPod/iPhone/ipad，Cell phone，MP3， MP4，Computer， Notebook， PSP.6.Attention��This product was design for waterproof and you can use it in the rain without any problem but please don��t put it into the water long time.Specification :Bluetooth Version: CSR 4.0Battery��Lithium 3.7V 750mAHCharging ��DC 5VCharging time: 2HMusic play time��5��Speaker size����40 4�� 3WOperation Range:10MFrequency�� 2.402-2.480 GHzAudio Interface: 3.5mm jackPhonespeaker with microphone: to answer/ending a callNet Weight��100gProduct Dimensions��10.5x5.7x2.2cmPackage Weight:155gPackage Dimension:12.2x8.3x3.2 cmColors : Black，White，Red，camouflagePackage:1 x Bluetooth Speaker1 x USB charge cable1 x Audio Cable