To have Bluetooth interconnection function or wireless series function can be connected. Both are turned on to Bluetooth mode, and you can automatically connect to the other speaker by pressing the interconnect button on one. Audio that can achieve such interconnection such as: the new Langqin M400 and so on. 1. Now adjust a Bluetooth speaker to flash (pairing mode), search the Bluetooth speaker with your mobile phone and pair it; Try playing music and see if the speakers can make sound. Normal is OK. 2. Adjust the second speaker to flash the light, search for the Bluetooth speaker with the mobile phone, and pair it. This is paired with two speakers, but only one speaker is working and the other is on standby. When playing music, you can switch from your phone to which speaker to use. How to connect the Bluetooth speaker to the mobile phone, the specific steps: 1, before use, it is recommended to fully charge the Bluetooth speaker. Charging method: Plug the charger into the charging socket of the Bluetooth speaker, and then connect the charger to the AC power supply or personal computer. When charging, the charging indicator is on. After charging, the indicator is off. 2. Turn on the Bluetooth speaker. 3. Turn on the Bluetooth function of the mobile phone and find the Bluetooth device. 4, turn on Bluetooth on the phone to find the Bluetooth device, the password manual has. The common password is 0000 or 1234. 5, connect, Bluetooth speaker will beep. 6, then you can listen to music, answer the phone and so on.