1、Compatible with bluetooth of mobile phones, tablets and computers, it's easy for wireless connection and fit for Windows/ Android/IOS and other operating systems. 2、Various modes can be selected to meet the needs of various scenes and enjoy music anytime and anywhere. 3、With Bluetooth intelligent chip, the sound of the audio is more clear and natural, with distinct layers, improving the sound quality. 4、Once paired, there is no need to be paired again. Turn on and can automatically connect, can listen within 10m. 5、The use of the more advanced BXS (Bass Xpansion System) to provide a more comprehensive bass enjoyment, 45mm driver can bring more comfortable experience. 1 x Bluetooth Speaker1 x USB Cable Item Type: Bluetooth Retro SpeakerMaterial: ABSWeight: Approx. 240g/ 8.5ozInput: DC 5VOutput Power: 3WSignal Distance: Approx.10m/ 32.8ftBattery: 400mAhUse Time: 1.5-2 hoursOperation Mode: ButtonFrequency Response Range: 100Hz-20KHzSNR:＞75dBInterface Type: Memory card/ USB MicroProduct Instructions: This product can be connected by Bluetooth pairing, plug card, USB and FM radioBluetooth Pairing: After opening the switch on the back of the speaker, turn on the Bluetooth of mobile phone or other devices to find the audio signal match of "W2". After connecting, audio can be played, and you can directly control the playback on the device.Insert Card: turn on the switch, insert the memory card in the memory card port on the back, select the mode on the top of the head, select the memory card mode, and then you can control the playback through the above button.USB: Open the switch, insert USB in the USB port on the back, press the mode on the top of the head to select, select the USB mode, and then you can control the playback through the above button.FM: Turn on the switch, select the mode above the head, select the FM radio mode, and then you can control the playback through the above button.Four Buttons Instruction:M key: mode selection button, you can choose Bluetooth, USB, memory card, FM radio- key: last song (long press to lower volume)+ key: next song (long press to increase the volume)Play/ Pause button: Play, pause, press twice in a row to make a phone call, press answer when incoming, long press to cancel Bluetooth pairing, and short press to search channel when in FM mode.