This is a new and unused ROCKBROS Q1MAX high-performance tail light, a well-known brand for cycling accessories. (The package will be omitted and shipped via Yu-Packet Post. A separate listing is available for the unopened package.) Features: 《Brake Warning & Light-Sensitive/Vibration Detection Auto On/Off》 Equipped with a smart brake warning function, it emits light at maximum brightness when braking or decelerating, alerting those behind you. It automatically turns off in bright places (such as under strong sunlight) or after 30 seconds of stopping, and automatically turns on when it detects darkness (such as inside a tunnel) or vibration. (Double-clicking the button switches between automatic/manual modes. The light-sensitive/vibration detection function is turned on in automatic mode.) *Note: The Q1 model (a lower-grade model) does not support this function. 《5 Lighting Modes》 You can switch between 5 lighting modes with one button. Q1MAX model: Red light flashing (25 hours), Red and blue alternating flashing (30 hours), 7-color breathing flashing (20 hours), Red light rapid flashing (80 hours), Red light constant on (15 hours). 《USB Charging & Power Level Check》 With a 300mAh capacity, it can be repeatedly charged via USB-C. You can check the battery level when turning on the power with the blue battery charging status indicator lamp. *Charging time: Approximately 2H. Charging cable included. 《High-Strength Aluminum Alloy & IPX6 Waterproof》 The high-quality aluminum alloy exterior is lightweight and durable. It has excellent impact resistance, heat dissipation, and corrosion resistance, and with IPX6 waterproof, you don't have to worry about sudden rain. It can be used for daily use such as commuting to work or school, as well as for本格サイクリング. 《Easy Installation》 It can be installed on either the seat rail (under the saddle) or the seat post (tools required for installation are included). Specifications: Brand: ROCKBROS Purpose: Bicycle tail light Material: Aluminum/Resin Waterproof: IPX6 Condition: New and unused I purchased this new but have no opportunity to use it, so I am selling it to declutter. Although it is 【new and unused】, the price is set considering that it is different from a new purchase from a store. Please understand before purchasing. Due to shipping and packaging costs, please refrain from price negotiations. Shipping will be done via Mercari, which offers anonymity and peace of mind. Thank you very much. #阪奈ベース ©阪奈ベース