Condition: 100% brand new_x000D_ Item type: Bluetooth Audio Receiver_x000D_ Material: ABS_x000D_ Color: black_x000D_ Weight: Approx. 20g_x000D_ Battery type: polymer lithium battery_x000D_ Battery capacity: 180MAH_x000D_ Bluetooth version: V4.1_x000D_ Standby time: about 250 hours_x000D_ Talk time: about 10 hours_x000D_ Power display: Support for Android, for IOS_x000D_ Frequency: 2.4Hz_x000D_ Protocol support: HEP1 / 6 / A2DP / AVRCP_x000D_ Connection distance: about 15 meters_x000D_ Main functions: Concealed and non-flashing lights, caller ID, intelligent noise reduction, Chinese and English voice, lower electricity remind1Make your Car AUX audio system and home theater audio video HiFi surround system compatible with Bluetooth and get music from Bluetooth enabled devices. 2Connect the Bluetooth audio receiver to the line input or auxiliary input of the speaker and pair it with Bluetooth?enabled device. 3Simple operation, 3.5mm male?to?male audio connector or 3.5mm male?to?male audio cable for connecting speakers and receivers. 4Professional manufacturing, stable performance and high reliability. 5Lightweight and portable, easy to carry and use.1 xBuilt-in Bluetooth adapter1 x 3.5 audio heads1 x Charging Cable 1 x Instructions