ITEM NAME:5.0 FM Transmitters FM Radio Transmitter Adapter Modulator Kit Description: Supports hands-free calls, integrated microphone, secure call answering Support A2DP function of mobile phone, directly play high quality mobile music after connecting it to Reconnect automatically after switching on and automatically enter the pairing status Supports TF cards / U disks to play music in MP3 / WMA / WAV format Comes with USB car charger, 5V / 3.1A output, can charge mobile devices. Specification: Version 5.0 Operating voltage: 12-24V Limit voltage: 9-26V Sensitivity: dB + -42 / 360 dB Operating current: 45 MA (maximum) Standby current: 25 mA (maximum) Frequency: 2.402-2.480 GHz Effective distance: 8 meters Sensitivity: -92 dBm RF output: 4 dBm FM Frequency: 87.5-108.0 MHz Transmission power: 87 dBuv / 107 dBuv FM distance: 2 meters Package Includes: 1 X Hands-Free Kit 1 X Manual Note: Please allow slightly 0-1cm difference due to manual measurement. Color may be slightly different since different monitor. Thanks for your understanding and attention. Wish you a pleasant shopping experience! SKU: ALU0013757977018382.FM Frequency: 87.5-108.0 MHz. 1 X Hands-Free Kit. SKU: ALU0013757977018382. Color may be slightly different since different monitor. 1 X Manual. Sensitivity: dB + -42 / 360 dB. Transmission power: 87 dBuv / 107 dBuv.