This BT numeric keypad is portable, ideal for business use. Aluminium pad and ergonomic tilt design is durable and comfortable to use. Built-in battery keeps a long-time use. It supports Windows,iOS,Android systems. •Aluminium Numeric Keyboard: The wireless keyboard is in sleek style. Solid aluminium coating and ergonomic tilt design make it durable and comfortable to use •Rechargeable Battery: With built-in 110mAh rechargeable battery, the keyboard has 2 months standby time •Lightweight and Portable: Using space aluminium material, the numeric keyboard is more lightweight and durable. You can put it into your bag and carry it for business trip •X-Scissors Design: Being dustproof and anti-fingerprint, the BT keyboard keeps decent all the time. It is mute and comfortable to type. 3-5 millions times strikes ensure longer use •Bluetooth-compatible 3.0 Connection: It is easily connected with Mac or laptop via BT 3.0. stable and faster connection is guaranteed •Wide Compatibility: Widely compatible with BT-enabled OS, such as Windows, Android system laptop, PC, tablet, iPad and Macbook Specification: •Material: Aluminium alloy and ABS •Supported system: Windows,iOS,Android •Key numbers: 34 keys •BT: BCM20730 •BT version: BT3.0 •Key stroke: 5 millions •Response time: 5 millisecond •BT transmission distance: 10m/33ft •Current: 2mA/3.7V •Battery: Built-in lithium battery •Battery capacity: 110mAh •Charging time: 2 hrs •Using time: 50 hrs •Standby time:＞2 months •Item size: 14.6 x 11.4 x 0.9cm / 5.75 x 4.49 x 0.35in(L x W x H) •Item weight: Approx.126g / 4.44oz Package included: •1 x Wireless Numeric Keyboard •1 x USB Charging Cable •1 x User Manual (English, Japan, Germany, French, Spanish, Italy)