Features:-Blutooth Version: 3.0. Easy connect to many Bluetooth devices(above BT3.0) within distance of 10M.-Support SD Card. With the limit of Bluetooth， just play the music in your memory card.(SD card is not included in the package.)-Beautiful Sound. Its sound is a feast of your ears!-Fast Functional keys. For convenient use， buyer can fastly control the speaker with fast functional key， like play / pause / volume up / volume down / previous song / next song / anwser / reject / end.-Hands-Free. Being connected by cell phone， it supports user have a nice long call with friends and families hands-free.-5-6H Play time， Small body with huge power.-Portable Pocket Mini Speaker. Small for easy carrying-Environmental Material. soft silicone material is friendly for health and environment.-Recharge Device DC-5V charge， safe to use.-Battery Capacity:internal 600mA Specifications:1.Output:RMS3W THD=10% 2.Response frequency:150-18000HZ 3.SNR:≥80dB 4.Speaker:1.77inch(OD:45mm) magnet-free，4Ω 5.Bluetooth 3.0;SD card 6.DC-5V charge 7.Battery Capacity:internal 600mA 8.Color: YellowPackage Contents:1*Aosder JH-WQBT3 Wireless tennis ball mini pocket speaker beautiful sound Bluetooth 3.0 Support SD card hands-free call 1*USB cable1*User manual