1. Material: polycarbonate 2. Transmitting power: ≤10W 3. Battery capacity: 2800 mA 4. Working voltage: 7.4V 5. Frequency range: 400-480MHZ 6. Applicable scenarios: service/catering/site/property/warehouse, etc. 7. Large LCD display 8. 1000 times drop test, improve the resistance to fall and impact 9. Size: about 139x58x36 cm 10. Weight: about 180 grams