Compatibility Specifically designed for the Merida BIG SEVEN 10D 2023 — includes both front headlight and rear taillight for that model. Key benefits Reliable visibility: Multiple lighting modes let you choose steady or flashing output for improved visibility to other road or trail users. Weatherready durability: quality aluminum alloy casing and an IPX5 waterproof rating keep the lights operating in rain and splashes so you can ride in wet conditions with confidence. Simple, dependable power: Builtin USB rechargeable battery with fastcharging technology removes the need for disposable batteries and provides convenient recharging between rides. Features and performance Lighting modes: beam, medium beam, low beam, flash, slow flash, and SOS — easily selected with a single, simple button operation. The lights can also serve as an emergency flashlight in urgent situations. Construction: Rugged aluminum alloy casing for durability without compromising daily use. Water resistance: IPX5 rating protects against water jets and heavy rain for reliable outdoor performance. Charging: USB rechargeable with fastcharge support for quick turnaround between rides; designed to reduce downtime and power concerns. Why it solves common problems Eliminates battery replacements and the inconvenience of carrying spare cells by using a builtin USB rechargeable battery. Prevents unexpected failures in wet weather with a waterresistant, corrosionresistant aluminum enclosure. Offers flexible visibility options (steady and flashing) to suit commuting, trail riding, or emergency needs. Practical use scenarios Commuter ride in poor weather: Mount the front and rear lights on your Merida BIG SEVEN 10D 2023 and maintain consistent illumination during rainy morning or evening commutes. Afterdark trail rides: Use or medium beam modes for forward visibility and flashing modes to increase your presence to other riders on narrow trails. Emergency roadside situation: Activate the SOS or flashlight mode to signal for help or inspect equipment after a fall or mechanical issue. What's included / fit Front headlight and rear taillight set sized and designed for installation on the Merida BIG SEVEN 10D 2023. Constructed with aluminum alloy housing, IPX5 water protection, USB rechargeable battery, fastcharging support, and multiple selectable lighting modes. Dependable, weatherresistant lighting designed to keep Merida BIG SEVEN 10D 2023 riders visible and powered on every ride.