Podct parameters】 Brand: ESSAGER Product name: Beautiful multi-function Bluetooth adapter Material: ABS Interface specifications: Type-C,3.5mm Function: Bluetooth 5.3 Support agreement: A2DP/AVDTP/AVRCP/RFCOMM/HFP/HSP/SPP/HID Battery capacity: 110mAh Transmission distance: 10~20 meters Color: Black 【Product Features 】 1. Bluetooth 5.3, support multiple protocols, compact and long battery life 2. Lavalier design, exquisite and compact 3. Support a variety of Bluetooth protocol (A2DP/AVDTP/AVRCP/RFCOMM/HFP/HSP SPP/HID) 4. Transmission distance of 10-20 meters, get rid of the length limitation of wired headset. 5. TF card slot, the second to change the Walkman (music format support MP3/WAV) 6. Built-in high-definition noise-canceling microphone, support for incoming calls 7. Compatible with OMTP and CTIA headset plugs