Wired bicycle speedometer Equipped with luminescence for night use. The wired speedometer provides accurate speed detection. IPX4 waterproof rating. High-quality chip ensures stable operation. It can also monitor temperature, providing an estimate of the outside temperature. Specifications: Product: Wired Bicycle Speedometer Type: IC321 Induction line length is approximately 80cm Power supply: Button cell Battery life: 6- Material: ABS Color: Black (Backlight varies, no specific requests for Backlight accepted.) Package Contents: 1 x Bicycle Computer Only the above package content is included; other products are not part of the offer. Note: Light reflection and different displays may cause the item's color to differ slightly from the actual product. Measurement tolerance is +/- 1-3cm.