KKmoon Universal IR Appliances Wireless Infrared Remote Controller Adapter Zazaremote for OTG Android Mobile Cellphone Samsung S5 S4 Google LG Compact, small-size and portable. No battery needed, powered by your cell phone, low consumption. Fast and accurate, no data format conversion error. Available for most of OTG mobile phone. Make an easy life, turn your cell phone into a universal remote control.