The Leyic front light utilizes two Samsung LH351B LEDs, which are recognized for their efficiency and substantial light output, illuminating a broad area for navigation on dark paths. The rear red light, featuring 14 ultra-bright LEDs, is designed for high visibility from a distance, aiming to ensure riders are noticed from "all the way down the street" by motorists. This combination, with 4 distinct modes for the front (high, medium, low, strobe) and 6 for the rear (including variable flashing speeds), allows cyclists to adapt their illumination to ambient light conditions, enhancing safety during night rides in urban environments or on unlit roads.

These Leyic lights are engineered for tool-free installation, primarily using flexible rubber and silicone straps. The material type provides a secure grip on various diameters of handlebars and seatposts, typically ranging from 20mm to 35mm without requiring separate adapters. This attachment system allows for swift mounting and removal, which is ideal for security against theft when parked, or for easily transferring the lights between bicycles, scooters, or even for use during dog walks or hikes where portable illumination is needed.

The integrated USB rechargeable batteries in both the front and rear Leyic lights offer significant long-term value by eliminating the recurring expense of purchasing disposable AA batteries. This convenience means riders only need a standard USB cable for charging, which is widely compatible with power banks, computers, or wall adapters. Over time, this saves money compared to the ongoing cost of batteries, and also reduces waste. Users can expect consistent performance, provided the built-in battery is charged before rides, ensuring reliable illumination without unexpected power loss.

With an IPX5 waterproof rating, the Leyic bike lights are designed to withstand water exposure from various directions, including moderate to heavy rain. This specification means the lights are protected against water jets, preventing issues like 'rain-induced lumen decay' or internal short circuits that can occur with less protected electronics. Cyclists can confidently use these lights during wet conditions, whether navigating through puddles or riding in persistent rainfall, ensuring visibility and functionality without concern for water ingress.