{"product_id":"mountain-bike-speedometer-sd-558a-with-blue-luminous-display-28-functions-cycling-computer-for-bicycle-electric-vehicle-motorcycle-metric-imperial-units-black-engineering-plastic-lcd","title":"Mountain Bike Speedometer SD-558A with Blue Luminous Display 28 Functions Cycling Computer for Bicycle Electric Vehicle Motorcycle Metric Imperial Units Black Engineering Plastic LCD","description":"\u003ch1\u003eSD-558A Mountain Bike Speedometer with 28 Functions and Blue Luminous Display for Bikes, E-Bikes, and Motorcycles\u003c\/h1\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"SD-558A mountain bike speedometer with blue luminous display showing speed and distance on black background\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US09\/6569\/2025-10-30\/original-image\/11780614293436.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eThe SD-558A speedometer delivers 28 major cycling computer functions in a compact, easy-to-read unit. Its blue luminous backlight solves the common problem of reading your display at night – between 17:00 and 08:00, simply press any button to light up the screen for around 4 seconds. Whether you ride a mountain bike, a commuter bicycle, an electric vehicle, or even a motorcycle (4- to 40-inch wheel sizes), this device gives you the data you need: real-time speed, trip and total mileage, riding time, average speed, current time and date, and much more. The double-row, four-window LCD layout presents information clearly, so you can glance down and stay focused on the road.\u003c\/p\u003e\n\u003ch2\u003eFeatures and Construction\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"SD-558A mountain bike speedometer with blue luminous display showing speed and distance on black background\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US09\/6569\/2025-10-30\/original-image\/1429684139936.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eBuilt from engineering plastics with a durable LCD panel, the speedometer is designed for everyday use. Its sensor-based design provides stable speed readings across a wide working temperature range. The unit also includes practical extras like a stopwatch, speed comparison indicator, and speeding reminder to help you ride more safely.\u003c\/p\u003e\n\u003ch3\u003e28 Major Functions\u003c\/h3\u003e\n\u003cp\u003eThe speedometer tracks real-time speed, average speed, maximum speed, trip distance, total mileage, riding time, total riding time, current time, and current date. It also includes a stopwatch, speed comparison indicator, and a speeding reminder that alerts you when you exceed a preset limit. Additional functions include vehicle refuelling and maintenance reminders, plus ambient temperature display.\u003c\/p\u003e\n\u003ch3\u003eBlue Luminous Backlight\u003c\/h3\u003e\n\u003cp\u003eThe high-brightness cold light source provides a blue backlight that activates between 17:00 and 08:00. Press any button to turn it on, and it automatically extinguishes after about 4 seconds. This makes it easy to check your data in low-light conditions without draining the battery unnecessarily.\u003c\/p\u003e\n\u003ch3\u003eSize and Build\u003c\/h3\u003e\n\u003cp\u003eThe main unit measures 9 x 4.5 x 1.5 cm, with a display area of 7.3 x 1.7 cm. The sensor wire is approximately 82 cm long, sufficient for most bike frames. Power comes from a single CR2032 button cell battery (included).\u003c\/p\u003e\n\u003ch2\u003eUses and Placement\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"SD-558A mountain bike speedometer with blue luminous display showing speed and distance on black background\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US09\/6569\/2025-10-30\/original-image\/2591510587714.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eThis cycling computer is designed for a wide range of two-wheeled vehicles. With compatibility from 4 to 40 inch wheels, it suits children's bikes, mountain bikes, road bikes, electric bikes, and even motorcycles and scooters.\u003c\/p\u003e\n\u003ch3\u003eBicycle and E-Bike Use\u003c\/h3\u003e\n\u003cp\u003eMount the speedometer on your handlebars and route the wire along the brake cable. The sensor attaches to the front fork and the magnet to a spoke. Use it to monitor your daily commute, track training progress, or simply know how far you've ridden.\u003c\/p\u003e\n\u003ch3\u003eMotorcycle and Scooter Use\u003c\/h3\u003e\n\u003cp\u003eThe same setup works on motorcycles and scooters with wheel sizes up to 40 inches, provided you can securely attach the sensor and magnet. The speedometer's large display and backlight make it useful for night riding on these vehicles as well.\u003c\/p\u003e\n\u003ch3\u003eMulti-Unit Flexibility\u003c\/h3\u003e\n\u003cp\u003eChoose between metric and imperial units for speed and distance. The speedometer also offers Celsius or Fahrenheit temperature display, and 12- or 24-hour time format, making it suitable for riders in different regions.\u003c\/p\u003e\n\u003ch2\u003eBenefits and Buying Value\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"SD-558A mountain bike speedometer with blue luminous display showing speed and distance on black background\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US09\/6569\/2025-10-30\/original-image\/560598302880.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eThis speedometer delivers essential cycling data without a complicated setup. Its key advantage is the blue luminous backlight, which adds safety and convenience for night riders. The included battery and simple installation mean you can start using it immediately.\u003c\/p\u003e\n\u003ch3\u003eEasy to Install and Maintain\u003c\/h3\u003e\n\u003cp\u003eThe package includes everything you need: the unit, sensor, magnet, handlebar mount, cable ties, and a CR2032 battery. The rainproof design and easy-to-wipe surface mean minimal upkeep. The automatic standby function saves battery when not in use.\u003c\/p\u003e\n\u003ch3\u003eVersatile Compatibility\u003c\/h3\u003e\n\u003cp\u003eBecause it works on bikes, e-bikes, and motorcycles from 4 to 40 inches, you can use the same speedometer on multiple vehicles or upgrade without replacing the computer. The wide working temperature range also ensures reliable performance in various climates.\u003c\/p\u003e\n\u003ch3\u003eWhy Choose This Product\u003c\/h3\u003e\n\u003cp\u003eFor riders who need a reliable, multi-function cycling computer with a practical night-reading feature, the SD-558A offers 28 functions at a straightforward price. The blue backlight, speed comparison indicator, and speeding reminder add real-world value, while the easy-to-read LCD and flexible unit selection make it suitable for cyclists around the world.\u003c\/p\u003e","brand":"u9cmuw-dx","offers":[{"title":"Black","offer_id":56830615912828,"sku":"CJYDQCZX00621-Black","price":22.68,"currency_code":"GBP","in_stock":true}],"url":"https:\/\/havenmere.co.uk\/products\/mountain-bike-speedometer-sd-558a-with-blue-luminous-display-28-functions-cycling-computer-for-bicycle-electric-vehicle-motorcycle-metric-imperial-units-black-engineering-plastic-lcd","provider":"Havenmere.co.uk","version":"1.0","type":"link"}