product description:1. Adopt advanced Bluetooth audio decoding chip, support all Bluetooth device connection;2. Support FM radio, you can directly search for radio stations in the listening area;3. The tone is soft, clear and dynamic, with distinct levels;4. Direct reading TF card and U disk;5. The Bluetooth receiving distance can be as long as 10 meters or more6. Support LINE IN audio input, provide you with computer speaker function. Can be directly connected to mobile phone/tablet computer/and TV Bluetooth pairing to play music;7. In the state of no Bluetooth connection, it will automatically shut down for half an hour.Specification:Bluetooth version: V5.0Wireless transmission range: 10MAudio-to-noise ratio: ≥90dbBattery capacity: 1200mAhBuilt-in voltage: 3.7VNormal volume playback: 3H~4HSpeaker specifications: ￠45mm*2Speaker power: 4Ω/5W*2Frequency response: 120HZ-20KHZProduct size: 68.8x68.8x160mmSingle machine weight: 405 gramsCharging voltage: 5V/500MAFeatures:International advanced BT chip and circuit design  techniques, support all wireless devicesWith FM function, can search radio station broadcast automaticallyWith Hi-Fi speaker, to make sure the clear and bright sound.Support Micro SD card and USB card, play MP3 format audio.The wireless working distance is 10 meters.With AUX line in, can directly connect the outside devices, for example ,table PC/TV/cell phones.it will close automatically after 30 minutes if disconnect Bluetooth & torchlight not workingtorchlight with two options for strong and weak lightness for different condition.