Specifications:

• Certification: NONE
• Charging method: USB
• GPS: Beidou, GPS, GLONASS three positioning systems
• Is there a patent: yes
• Is there an APP: yes
• M2 Battery: Built-in rechargeable battery
• M2 Endurance time: 30 hours
• M2 functions: 18 kinds of practical data
• M2 Package Included: code table, wrench, 2 bracket, 2 cable ties, data cable, instructions
• M3 Battery: 400mah
• M3 Endurance time: 8 hours
• M3 Package Included: code meter, bracket , instruction, USB cable, 2 strap
• Material: composite material
• Model Number: M2/M3/M4
• Origin: CN(Origin)
• Stopwatch and Accessories: Wireless Stopwatch
• Waterproof grade: IPX5 (actually higher)