Features 1、With Bluetooth 5.0 version, the connection is more stable and the call is clearer. 2、Dual USB chargers support the charging of 2 devices at the same time, which is very convenient. 3、A hands free car kit with Bluetooth, you can answer or hang up a call with just one click. High definition call quality can reduce interference. 4、In music playback mode, you can play clear stereo music in the car through the Bluetooth FM transmitter. 5、Memory card/U disk can support playing more music, and support MP3/WMA/FLAC/WAV/APE format. Specification Item Type: Wireless Bluetooth FM Transmitter Model: B3 Material: ABS Product Color: Black Product Weight: Approx. 70g / 2.5oz Bluetooth Version: 5.0 Launch Distance: ＜5m / 16.4ft Interface: 2 x USB2.0, 1 x Memory Card Support Memory Card / U Disk Capacity: ≤32GB Power Supply: DC 12V-24V Support File Type: MP3/APE/FLAC/WAV Fm Frequency Range: 87.5-108MHz (100khz Step) Screen: LED Screen Package List 1 x Wireless Bluetooth FM Transmitter 1 x Manual