Set speedometer Step Step 1: Set the unit --- Long press the buttons "+" and "-", then press the button "-" to switch between km/h and m/h. Step 2: Set the speedometer---Press the button "+", then the number "208" flashes on the display, which means the default wheel size (only one wheel's circumference), the unit is CM. You can press the button "-" to change the track to 10-315 cm. Step 3: Set the odometer --- Press the button "+", then press the button "-" to adjust the odometer. Step 4: Press the button" -High sensitivity electronic speedometer and odometer -Smart battery level display -120 high decibel horn -Large screen display, anti-glare design -Automatic, fully charged cut-off system -Smart charging ensures longer battery life packing list 1 * Bicycle headlight 1 * Bicycle taillight 2 * Silicone mounting tape 2 * USB cable 1 *Code table data receiver 1 *Data sensor of code table 2 *Sensor rubber feet 1 *Speaker controller 4*Nylon belt 1 *User Manual how to install: 1. Loosen the magnetic head by hand and install it on the spokes. 2. Affix the rubber sticker to the receiver. 3. Install the inductor on the front fork opposite the brake. 4. The alignment of the head between the two sensors must not exceed 3mm. specification: Headlight size: 105*57*41mm Shell color: blue + black Light source: T6 Brightness: 350LM Mode: st

Widely Used:This bicycle light can be used as a conventional flashlight for hiking, camping, walking, home or office power failure emergency flashlight, night family/child activities, etc. Trumpet Sound And Bicycle Tail Light:Switch one of six sound modes with one click,The bicycle tail light has IPX4 waterproof function,It has an unmatched 360º visibility and a distance of up to 50 meters. Attaches In Seconds: The mount straps for both bike headlight and taillight can tightly fit around most handlebar and size seat posts. Easy and quick to install and release. No tools are needed. Rechargeable And Waterproof Bike Light: This LED bicycle headlight has a built-in 1200mAh battery for 3.5-6.5 hours riding, with accurate battery indicators, super waterproof. Waterproof Bicycle LED Light:The bicycle headlight is made of high quality ABS material,The headlights up to 500 feet of illumination distance, 95° luminous angle and 4 lighting modes to choose from.

International Protection Rating: IPX4. Auto Part Position: Rear, Front. Brightness: 800 Lumen. Number of settings: 4. Mounting Type: Seat Mount. Water Resistance Level: Waterproof. Power Source: Battery Powered. Material: Acrylonitrile Butadiene Styrene. Brand: oceansEdge11. Color: Black-upgrade version. Date First Available: June 6, 2020. Best Sellers Rank: #44,255 in Sports & Outdoors. Customer Reviews: 4.3 out of 5 stars 809 ratings 4.3 out of 5 stars. : B089RGCTRC. Part Number: ?100. Manufacturer: ?YSONG. Material: ?Acrylonitrile Butadiene Styrene. Color: ?Black-upgrade version. Brand Name: ?oceansEdge11. Package Weight: ?0.2 Kilograms. Item Package Dimensions L x W x H: ?4.25 x 3.74 x 2.32 inches.