Feature:1. This equipment can detect batterys voltage 2. Mobile phone can be connected automatically when the device powered on 3. Support an external USB (Universal Serial Bus) flash drive, can play music files in MP3 / WMA format 4. Integrated car charger of output 5V/2.1A, is available for charging handheld devices in car 5. Support mobiles A2DP function. music will be played directly while the mobile phone is connected Specification: Brand SIMRModel AP06bluetooth Version V4.2 Limit Voltage 9-29 V Rated Working Voltage 12V-24 V Sensitivity-42db+ / 3 db 360 Working Current 45m A (max) Stand By Current 25m A (max) Frequency 2.402-2.480 ghzbluetooth Effective Range 10 Meters Sensitivity-92 d Bm RF Output 4 d Bm FM Frequency 87.5 M Hz-108.0 M Hz Transmitted Power 87d Buv / 107d Buv Microphone Effective Range 2 Meters Size 13*6.5*4.8CMPackage Included:1 X Car Charger