Features 1、☞ English QWERTY Keyboard Layout: This Laser Projection Keyboard features an English QWERTY keyboard layout, ensuring a familiar and efficient typing experience for users. 2、☞ Portable & Multi-function Design: With its small size of 9x4.4x4.8cm, this laser keyboard is truly portable, easily fit into your pocket or bag, It's also can be used as a power bank, a USB port at the bottom of the projection, no worry about your mobile phone is out of battery. 3、☞ Full-size Key Pitch and Shortcut Keys: Despite its compact size, this Laser Projection Keyboard offers a full-size key pitch, providing a comfortable typing experience. Additionally, it comes with convenient shortcut keys for easy operation, enhancing productivity and efficiency. 4、☞ Superior Durability and Reliability: Built-in Lithium-ion Polymer rechargeable battery for mobility and convenience. One full charge can use up to 500min. It has no moving parts inside, making it more reliable and less susceptible to wear and tear. You can count on its long-lasting performance. 5、☞ Versatile Compatibility: The Laser Projection Keyboard is compatible with the latest operating systems, including Windows XP & later, Windows Phone 7 & later, iOS8 & later, Android 4.0 & later, and Mac OSX & later. You can seamlessly connect and use the keyboard with a wide range of devices, expanding its versatility and convenience. Specification Model: KB630-M1 Keyboard layout: QWERTY layout (about 19mm pitch) Light source: Red laser diode Size: 9x4.4x4.8cm Weight: 125g Projection size: Width: 250mm, height: 100mm Work platform: non-reflective, opaque plane Battery: 3.7V 2500mAh Discharging Time: about 500min Charging Time: about 180min Input/Output: 5V 1A BT: V3.0, HID PROFILE VER 1.0 Frequency range: 2402-2480MHZ Channel: 79 Modulation mode: GFSK Package Size: 14x9x5.6cm Package Weight: 255g Package List 1 x Laser Projection Keyboard 1 x USB Cable 1 x User Manual