TG187 Speaker functionBluetooth version: V5.0Wireless transmission range: less than 10MAudio noise ratio: 90dbBattery capacity: 4400mAhBuilt-in voltage: 7.4VNormal volume playback: 10H~12HPower: 4/25W*2Frequency response: 100HZ-20KHZProduct size: 292*132*139mmCharging voltage: 5V/2A1. Adopt advanced Bluetooth audio decoding chip to support all Bluetooth device connections;2, support FM radio, you can directly search the radio station in the listening area;3, the tone is soft, clear and dynamic, with distinct levels;SW4. Direct reading of TF card and U disk;SW5, Bluetooth receiving distance can be as long as 10 meters6, support LINE IN audio input, provide you with computer speaker function. Can be directly connected to the phone / tablet / and TV Bluetooth pairing to play music