1. Material: ABS
2. Working voltage: 4.5V
3. Working temperature: 10-50 degrees Celsius
4. Decibel: 125db
5. Installation method: SMT type
6. Communication method: magnetic induction
7. Battery: LR44 x 3 (delivered with batteries)
8. Suitable for a variety of scenarios
9. One-button switch control, simple operation
10. Using 125 decibel tweeter, the sound is loud
11. The main body is made of ABS resin, which is durable and has a smooth surface
12. Dimensions: host: 7.5 x 3.8 x 1.15 cm, magnetic stripe: 3.3 x 1.18 x 0.85 cm
13. Weight: 31 grams
