Specification: Item Type: Bluetooth Earphone Material: ABS Bluetooth version: V5.1+EDR Model: L10 Power Display: Support Bluetooth Protocol: A2DP/HFP/HSP/AVRCP Headphone Battery Capacity: 50 mAh, lithium battery Rechargeable Battery Capacity: 300 mAh, lithium battery Communication Distance: 10 meters Drive Unit: 10mm Impedance: 16Ω Frequency Response Range: 20-20000Hz Sensitivity: 90±3dB How to Use: 1. Take out the earphones from the charging box. At this time, the headset will automatically power on and pair. When the indicator light of one headset flashes red and blue alternately, and the other headset turns off, it indicates that the headset has been paired successfully. Turn on the Bluetooth function of the mobile phone, search for "L10" and click Connect. 2. When there is no charging box, press and hold the multi-function buttons of the two earphones for 3 seconds. When you hear the “turn on” prompt, and the earphone indicator light flashes alternately in red and blue, it means that the earphone is turned on. Both headsets are automatically paired after they are turned on, and one of the headset indicators is off, which means that the two headsets have been paired successfully. Turn on the Bluetooth function of the mobile phone, search for "L10" and click Connect. 3. When the headset is paired for the first time, it will be automatically paired after turning on the headset, and will automatically connect back to the connected device. Package List: 1 x Manual 1 x Pair of Earbuds 1 x Charging Cable 1 x Charging Box