Features:Notebook Button Feel The keyboard adopts simple chocolate square keycaps, uniform force, scissor foot structure, good rebound effect, comfortable operation feel. Rechargeable BT Keyboard Strong endurance, can work about 50 hours continuously. The built-in battery can be recharged repeatedly, no need to buy batteries. Wide Compatibility Suitable for a variety of devices: tablet/phone/PC; Suitable for a variety of operating systems: Windows/Mac/Android/IOS. Enriching Multimedia Functions Cooperate with Fn key, use multimedia combination function, office and entertainment are both enjoyable. Small and Portable Simple design, thinner than laptop. Convenient and easy to take outside with no burden. Specification:Item type: BT keyboard The standard keyboard: 78 keys Charging port: standard Android MICRO interface Color: Green,purple,pink,yellow(Optional) BT pairing name: BT 3.0 keyboard Charging time: about 2 hours Battery capacity: 150mAh BT distance: about 10 meters Continuous work: about 50 hours Battery life: about 3 years Standby time: about 30 days Item size:24.8*15*0.7 cm / 9.76*5.91*0.28 in(L * W * H) Item weight: Approx.186.6g /6.58oz Package size:25*15*1 cm / 9.84*5.91*0.39 in(L * W * H) Package weight:187g /6.6 oz Packing list:1 * BT Keyboard Notebook Button Feel: The keyboard adopts simple chocolate square keycaps, uniform force, scissor foot structure, good rebound effect, comfortable operation feel. Rechargeable BT Keyboard: Strong endurance, can work about 50 hours continuously. The built-in battery can be recharged repeatedly, no need to buy batteries. Wide Compatibility: Suitable for a variety of devices: tablet/phone/PC; Suitable for a variety of operating systems: Windows/Mac/Android/IOS. Enriching Multimedia Functions: Cooperate with Fn key, use multimedia combination function, office and entertainment are both enjoyable. Small and Portable: Simple design, thinner than laptop. Convenient and easy to take outside with no burden.