Key benefits Compact size and light weight with a wireless waterproof design for easy use and durable performance. Tracks speed, distance and riding time to help you monitor progress and plan rides. Simple, clean profile that stays fashionable while withstanding riding conditions. Waterproof construction ensures reliable operation in all weather. Core features Accurate data results: Built with end intelligent chip technology to provide accurate data transmission and stable performance during rides. Day and night readability: LCD screen with green backlight for easy reading from a distance, especially in dark conditions or long tunnels. Practical and fast recording: Records speed and kilometers without delay; when you ride again, you can resume with one tap and start your journey immediately. Wide compatibility: Suitable for most bicycle types, including road bikes, mountain bikes, folding bikes and other ordinary bicycles. Beginner friendly: Ideal for beginners who want to take their riding to the next level. What you get (usage highlights) Realtime metrics: speed, distance and riding time to help you measure performance and track progress over time. Weather resilience: designed to be waterproof for dependable use in variable conditions. quick start on next ride: onetap resume lets you pick up where you left off without setup delays. 23 practical use scenarios Daily commuting and fitness riding: monitor your speed, distance and riding time to manage workouts or track commuting distance. Training sessions: reliable data transmission and quick start enable efficient interval training and progress tracking. Night riding and low visibility: green backlight enhances readability at night or through tunnels, improving safety and confidence. Compatibility and scope Suitable for most bicycle types including road bicycles, mountain bikes, folding bicycles and other ordinary bicycles. Designed to be compact and lightweight, with a simple, durable wireless waterproof design suitable for regular cycling use. Note: This description preserves the original product's functions and specifications, including wireless and waterproof design, measurement of speed, distance and riding time, simple and clean profile, end chipbased accuracy, green backlit display, fast recording without delay, onetap resume, and wide bicycle compatibility.