Item Type: Wireless Bluetooth SpeakerMaterial: ABSBluetooth Version: 4.2Bluetooth Protocol: A2DP, HSP, HFP, AVRCPSignal Transmission Distance: Approx. 10m/32.8ftSignal To Noise Ratio: 80dbDistortion Rate: <0.3%Speaker Specifications: 4/1 x 5w 52mm Frequency Response Range: 100Hz~18KHzUse Time: 3 HoursBattery Specification: Lithium Battery 18650 3.7V/800mAh(Built-in)Charging Interface: MicroCharging Specification: DC 5V---1ACharging Time: 2 HoursAudio Input: USB, Memory CardPackage List1 x Wireless Bluetooth Speaker1 x USB Charging CableWhen playing music, the call ends and the speaker automatically restarts the music.1Bluetooth 5.0 high performance chip, intelligent automatic pairing, while reducing power consumption, greatly improving the transmission rate, the sound quality is smoother, and the signal is more stable. 2The memory card and U disk can be inserted to this wireless speaker to play MP3 popular music, and you can also listen to the broadcast through FM radio. 3Fashionable and high end appearance, popular line sense. 4 5w speakers are used, and they are equipped with a bass diaphragm, independent speaker cavity, and beautiful sound quality. 4Through two devices, you can perform 1+1 pairing to form a pair of speakers for playback, HIFI level sound quality, stereo sound, high resolution, and bring you a highfidelity sound music experience. 5Compatible with bluetooth devices such as mobile phones, computers, tablets, etc. And also compatible with common operating systems on the market such as for Windows, for Android and for IOS.