Specifications:

• Weight: about 8g
• Waterproof: IP68
• Use time: 300 hours
• Stopwatch and Accessories: Other
• Standby time: 300 days
• Size: about 38 mm x 30 mm x 9.5 mm / 1.5 inches x 1.2 inches x 0.4 inches
• Origin: CN(Origin)
• Model Number: Bicycle speed sensor
• Material: ABS
• Connection mode: wireless 4.0 and ANT+
• Colour: black
• Battery: CR2032