BTM-338 is the ultimate Bluetooth headset that combines communication and entertainment all-in-one. BTM-338 is the smallest Bluetooth headset embedded with FM radio and OLED showing the caller ID ; radio station frequency and station name (The radio station should support Radio Data System to display the radio station name) ; Bluetooth connection and battery capacity. BTM-338 plays FM radio and stereo music of your mobile phone, and switches freely between music and phone calls. BTM-338 employs the original CSP chipset to provide the best compatibility with most of the mobile phones in the world. The advanced 10 meters mobile away alart feature prevents your mobile phone from stolen.