1. Bluetooth-compatible Version: V5.1 2. Bluetooth-compatible Distance: 10m 3. Charging Time: About 1-2 Hours 4. Standby Time: About 80 Hours 5. Music Time: About 3 Hours 6. Talk Time: About 4 Hours 7. Headphone Battery: Polymer Lithium Battery 45mAh Specifications: 1. Listen To The Song To Answer The Phone, Support Listening To The Song To Answer The Phone 2. Caller ID Number, Last Code Callback, Full Intelligent English Prompt Tone, Power On, Pairing, Power Off, Low Battery, Etc. 3. Every Time The Headset Is Connected To The Mobile Phone, The Headset Will Automatically Connect Back To The Mobile Phone After Turning On The Phone, Which Is Convenient And Fast. 4. Smart Compatibility: Support All Mobile Phones, Tablets, Notebooks, Devices, And All Mobile Phones With Functions 5. Pairing Method: Long Press The Pairing Mode With The Blue Light Flashing, Wait For Automatic Pairing Together After Turning On The Phone (one Of Them Does Not Flash, The Pairing Is Successful) And Connect To The Mobile Phone. 6. Two Mobile Phones Can Be Connected Separately And Used Separately. (1 Headset Connected To 1 Device) Prompt Tone: Boot Tips: Boot Shutdown Prompt: Shutdown Pairing Status Prompt: Paring Connection Prompt: Your Device Is Connecting Disconnect Alert: Your Device Disconnected Low Battery Reminder: Low Battery Button Function: Long Press To Power On, Long Press To Shut Down, Click Music To Pause/play/answer/hang Up Package Included: 1*Earphone 1*charging Cable 1*Instruction Manual