Warm Tips:There is a sticker on the back of receiver, tear off the sticker and stick where you like.Features:1. Multi-functional car charging Bluetooth receiver and aux output and fm transmitter.2. High-end chip ensures stable transmission3. Have the noise reduction function.4. Bluetooth version: Bluetooth 3.0+EDR5. Accessibility distance up to 10 meters (depending on the phone, the environment and the transmission distance is different)Specifications:Brand: BakeeySize: 50×40×18mmColor: BlackMaterial: ABSPC Interface Type: USBSupply Voltage: 12-24VOutput: 5V/1A, 5V/2.1AFM Frequency: support FM transmit (87.5-108.0) full frequency bandOutput Interface: AUX output USB output interface support TF Card play;Support Agreement: A2DP, AVRCP, HSP, HFPFrequency Range: 2.4GHz-2.48GHzWorking Environment: -10 ~+50Package Included:1 * Bluetooth Receiver1 * Car Charger