Samsung EE-BT550, QWERTY, English, Samsung, Black, Wireless, Bluetooth Samsung EE-BT550. Keyboard layout: QWERTY, Keyboard language: English. Brand compatibility: Samsung, Product color: Black. Connectivity technology: Wireless, Device interface: Bluetooth, Bluetooth version: 3.0+HS. Power source: Battery, Battery technology: Lithium Polymer (LiPo), Charging source: USB. Mobile operating systems supported: Android 4.4