Features: 1. Adopt advanced Bluetooth audio decoding chip to support connection of all Bluetooth devices; 2. Support FM radio, can directly search the radio 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; 6. Support LINE IN audio input, provide you with computer speaker function. You can directly connect your mobile phone / tablet computer / and TV Bluetooth pairing to play music; Product parameters: Bluetooth version: V4.2 Wireless transmission range: 10M Audio noise ratio: ≥90db Battery capacity: 1200mAh Built-in voltage: 3.7V Normal volume playback: 3-8H Speaker specifications: ￠ 52mm * 2 Speaker power: 4Ω / 5W * 2 Frequency response: 150HZ-20KHZ Size: 75.5mm * 75.5mm * 161.6mm Stand-alone weight: 512g Charging voltage: 5V / 500mA-2A