1. Material: rubber paint, ABS, electronic components
2. Function: teaching, tour guide, conference, training
3. Built-in battery: 2200mAh lithium battery
4. Charging time: 3 hours
5. Use time: 20 hours
6. Standby time: 72 hours
7. Using head-mounted acoustic microphone, ergonomic design, comfortable to wear
8. Using 3-inch speakers, the volume is larger and the transmission range is wider
9. Support U disk/TF card playback
10. The length of the belt can be adjusted freely
11. Dimensions: 9.4 x 8.4 x 2.8 cm
12. Weight: about 230 grams

Packing list:
-Speaker x 1
-Headset Microphone x 1
-Belt x 1
-Data cable x 1