Specifications:
Material: ABS
Sample rate : 24bit / 48KHz lossless digital transmission sound quality
Wireless Band: 2.4GHz
Delay: < 12ms
Range: 30 meters outdoor or 15 meters wall distance
Lithium Battery Capacity: 780mAh
Charging Device: USB charging cable
Signal-to-noise Ratio: -98dB
Dynamic Range: >105dB
Frequency Response: 20 to 20KHz, +1dB / -3dB
Item Size: 54 * 45 * 13mm / 2.13 * 1.77 * 0.51in
Item Weight: 31g / 3.64oz
Package Weight: 89g / 5.08oz
Package Size: 7.4 * 6 * 3.8ccm / 5.12 * 3.15 * 1.57in

Packing List: (depending on your choice)
1 * Receiver
OR
1 * Transmitter
1/2/3/4/5 * Receiver (The quantity will ship according to your choice)
1 * Charging Cable
1 * Audio Cable
1 * Manual (English)