Features:1.Blue tooth 5.02.Excellent sound quality3.Blue tooth Music Player4.Hands-free function for calls5.Support MP3/MP5 / FM radio / PC / CD player by line-in cable connection6.Compatible with all Blue tooth-enabled mobile phones, iPhone, iPad, Tablets, PC/Mac7.Portable design & colorful for your choice8.Support Micro SD(TF card)9.Double speakers stereo effect10. listening to the song correct, support songs and call,11.. Power capacity will show on?your Iphone, you can see the power situation anytime, do not worry about the electricity ,make your life without worry;12.?Bluetooth spakeer?connected to the phone after the shutdown? , and then open the Bluetooth speaker will connect back to the phone? automatically? , more convenient;13. Intelligent compatibility: support all Bluetooth mobile phone, tablet, notebook, singing it, QQ music, movies, etc., universal all mobile phone;14. Bluetooth spakeer connected to the phone after the shutdown? , and then open the Bluetooth speaker will connect back to the phone? automatically? , more convenient;4. Intelligent compatibility: support all Bluetooth mobile phone, tablet, notebook, singing it,? music, movies, etc., universal all mobile phone;?Bluetooth version： 5.0Working time: 3-4hoursBluetooth working range： 10MetersAudio frequency noise ratio：More than 90dBBattery capacity： 500mAhBuilt-in voltage： 3.7VPlayback long： 3-4HCharge input:5V/500maOutput Power：4Ω 3W?Working Voltage：3.7V-4.2V+0.05VAudio signal -noise ratio：>65dBAudio input：Blue tooth & LINE-IN & TF CardDimension：145*45*45MM