WP-9

■ Sample rate: 24bit/48KHz lossless digital transmission sound quality
■ Wireless Band: 2.4GHz
■ Delay: stereo 10.8ms, mono 4.5ms
■ Range: 30 meters
■ Built-in lithium-ion battery can be charged by USB,Suggest using a 5V 1A charger
■ Frequency response: 20 to 20K Hz, +1dB/-3dB
■ Battery Model/Type TX/RX: 603040/602040
■ Battery capacity TX/RX: 780mAh/450mAh        
■ Battery Nominal Voltage: 3.7V 
■ Single body size (mm): 60 (L) X40 (W) X15 (H)mm
■ Weight of a single body: Transmitter 35g, Receiver 29g
■ Packaged weight: about 145g
■ Accessories included: transmitter×1, receiver×1, USB charging cable×1, audio cable×2