Model Number: MX31-#6595 Brand Name: Fenifox Key Specifications/Special Features: Key specifications/special features: 1. Reliable 2.4GHz wireless two-way connection with 15m working range2. Design by the latest A3000 sensor with high-speed motion detection up to 30ips and 20g3. IR light tracing technology, work with many surface4. Power: 2-piece AAA batteries5. Materials: ABS surface cover, environment-friendly and light6. With latest energy-saving technology and power switch, battery lifetime is up to 18 months7. Three adjustable CPI: 1000/1500/2000CPI8. Ergonomic design for a good touch feeling