1. Note: this is only a wireless receiver, it must be matched with a transmitter (195-216MHz) to build a wireless tour guide system
2. Frequency range: 195-216MHz
3. Channels: 49 channels
4. Frequency response: 50Hz-18000Hz
5. Operating voltage: DC 3.7V
6. Audio input: 3.5mm cable
7. Frequency response range: 50-18000Hz
8. Signal-to-noise ratio (SNR): 80dB (typical)
9. Mirror image rejection ratio: greater than 90dB
10. Distortion: less than 0.3 percent
11. Effective working area: about 100m (open)
12. Battery capacity: 900mAh
13. Operating time: about 20h
14. Size: about 7.3 x 4.2 x 1.2cm
15. Weight: about 45g

Features:
1. Portable design, lightweight and compact
2. PLL synthesis design, high frequency stability
3. 49 channels, allowing 49 groups to operate simultaneously at the same location
4. Built-in rechargeable lithium battery, to ensure that can be used one day
5. LCD display, adjustable volume, power display, easy to operate
6. Application: tour guide, wireless conference, wireless teaching, simultaneous interpretation, corporate hospitality, factory visits, etc.

Packing list:
- Wireless receiver x 1
- Single earphone x 1
- USB charging cable x 1
- Lanyard x 1