The Angibabe Ultra Slim Bluetooth Wireless Aluminum Keyboard Case for iPad 2/3/4 makes iPad typing easy and effortless. It is made of ultra tough aluminum alloy that protects the iPad from scratches and damage. Using Bluetooth 3.0 connection， the keyboard link is faster and more stable with a working distance up to 10 meters. And it is powered by the built-in battery with up to 55 hours of uninterrupted working time. Moreover， it features a micro USB port for convenient charging. It surely is worth your investment!                                    Features             Made iPad typing easy and effortless<br> Made of ultra tough aluminum alloy， protect the iPad from scratches and damage<br> Use Bluetooth 3.0 connection to ensure a faster and more stable keyboard link<br> Powered by the built-in battery， up to 55 hours of uninterrupted working time<br> Micro USB port for convenient charging<br> Slim， lightweight design， easy to carry <br>                                                            Specifications             Executive Standard     Bluetooth 3.0    <br> Working Distance     10meters    <br> Input     Micro USB Charge 5V    <br> Modulation System     GFSK    <br> Operating Voltage     1.8-3.6V    <br> Work Current     100mA    <br> Standby Time     60 Days    <br> Litheum Battery Life     3 years    <br> Uninterrupted Working Time     55 hours    <br> Charging Time     4-5 hours    <br> Lithium Polymer Battery Capacity     160mAH    <br> Material     Aluminum Alloy， Plastic    <br> Color     Silver    <br> Dimensions     (25 x 20 x 2) cm/ (9.84 x 7.87 x 0.79)" (L x W x H)    <br> Compatible with     iPad 2/3/4    <br> Weight     11.28oz  / 320g       <br>                                                             Package Includes            1 x Aluminum Alloy Bluetooth Keyboard<br>1 x USB Cable<br>1 x Manual <br>