Mobile Phone Call Recording Headset Portable Bluetooth Recording Headphone for IOS Item Type: Call Recording Headset Material: ABS Color: Red Bluetooth: 5.0 Distance: 10m/32.8ft Battery: Lithium Battery 200mAh (Shipped with Built-in Battery) Recording Function: 1. Built-in Clock Chip to Record Files Named After Date and Time. 2. Automatic Recording when the Call is Connected, and Automatically Stop Recording when the Call Ends. 3. Automatic Answering, Leaving Messages and Recording Functions. 4. Copy the Recording File in the Headset to the Computer Via the USB Cable. 5. When the Storage Space is Insufficient, the Oldest File is Automatically Deleted, and There is No Need to Manually Delete the File. 6. The Built-in Microphone Can Be Used As an Ordinary Earphone when Not Recording.