Unique accessories for android phone. It's easy to insert and remove, can change the buckle to fit for your cellphone in 4.2''-6.8''. Design to fit for your android phone with OTG function (Please ensure that your cellphone own this function before you order). Let your typing more convenient and make your hand free to community to other with video. For testing, this keyboard case perfect fit for most android phone in 4.2''- 6.8'' with OTG. So buy this Case and Save 33% OFF for General Wired Keyboard Flip Holster Case For Andriod Mobile Phone 4.2''-6.8''