Specifications: Model Name: UR02 Transmission type: InfraRed and Bluetooth connection ver. 4.1, 4.2, 5.0 compatible Learning function: Yes Number of keys: 24 pcs Sensing option: Gyro Sensing Max Operation Distance: Up to 8 meters when without obstacles Keys Design: 24 keys remote including four direction keys and 10 infrared learning keys Search Option: Built-in microphone for voice search Materials: Silicon keys + Plastic Shell LED Functionality The remote control interface includes 3 indicators, with operation and indicating as follows: 1) Infrared default mode: red LED is bright 2) Infrared learning mode: the green LED is bright 3) Bluetooth mode: the blue LED is bright Power supply: AAA battery * 2 (Not included within) Product Weight: 50g Remote Dimensions: 142mm*38.5mm*17mm Package includes: 1 x UR02 Remote 1 x English User Manual