... Frequency Compatibility "850MHz, 900MHz, 1800MHz, 1900MHz FM Radio bluetooth Watch Phone Specifications & Details Color silver shell and ... video, and texting messaging) " Bluetooth:support V2.0 bluetooth or mono bluetooth Battery:450 mAh, Talk Time: 3-4 hours -Stand By ... : 85-100 hours " GSM Frequency Compatibility "850MHz, 900MHz, 1800MHz, 1900MHz " PDA: calendar, To ...