1. Working Frequency: 2.4Ghz
2. Material: ABS
3. Waterproof level: IPX45
4. Display area: 1.5 inch (diagonal)
5. Technology: E-paper and dot- matrix display.，
6. Product size : 40x49x16mm
7. Weight:25g
8. Visual angle:175°
9. Working temperature: 0 ~30 °C
10. Language: no limit
11. Battery Life: CR2477x1 (work life >5 years), it can be replaced
12. Performance : Zero power consumption to keep the price information.
13. Display Color: black&white
14. Resolution: 152x152
15. Support update online
