... Frequency Compatibility "850MHz, 900MHz, 1800MHz, 1900MHz FM Radio bluetooth Watch Phone Specifications & Details Color silver shell and bracelet; ... 15 mm (length) " Video Player: Yes, AVI format Audio Player: MP3, WAV, AMR and MIDI format music play ... Audio OFF/ON" Messaging Types :SMS (text messaging), MMS (picture, video, and texting messaging) " Bluetooth:support V2.0 bluetooth or mono bluetooth ...