Magic loudspeaker system design, amazing dual power built-in low-frequency amplifier design, medium and low-frequency more shocking, with better sound quality performanceSymphony LED lights with a variety of flashing modes, the lights can flash with the music melodyIt supports the handsfree call function, and has a built-in high-sensitivity microphone, so that mobile phone calls can enjoy extremely smooth callsSupport MP3 decoding of music playing on U disk and TF card, and support full rate playback of MP3 formatTWS function, you can connect two speakers with one phone syncBuilt-in FM radio module, which can automatically search and store radio stations, saving time and effort; support AUX audio input, providing you with computer speaker function Specifications: Bluetooth version: V5.3Wireless transmission range: 10MAudio performance to noise ratio: ≥ 90dbBattery capacity: 1200mAhBuilt-in voltage: 3.7VNormal volume playing: 3H~4HSpeaker size: Φ 45MM * 2Horn power: 4Ω/5W2Frequency response: 120HZ-20KHZProduct size: 186.6 * 75.3 * 73.8mmProduct weight: 407g Package included: 1 x Bluetooth Speaker 1 x USB Charging Cable 1 x AUX Audio Line 1 x English and Chinese User Manual Other items not include