Descriptions Description: Normal mode: click the button to enter the flashing mode: low-bright flashing-high-bright flashing-explosive flashing-closing (point-to-shift); double-click the button to enter the constant-bright mode: low-bright-mid-bright-high-bright-closing (point-to-shift); photosensitive mode: long button to enter: low-bright flashing-high-bright flashing-explosive flashing, point-to-point cycle in turn, press about 3 seconds to remove the sensitized mode and then press the switch in turn. In the process of turning on the light, double-click the button, which can be always bright, low-bright-medium-bright-high-bright, and click in turn to cycle (in the light-sensitive mode, it is necessary to double-click the button to release the constant-bright mode into the flicker mode before long pressing the light-sensitive mode); [Battery]: Rechargeable polymer Li-ion battery (3.7V, 500MAH) [Weight]: Weight: about 90 g; [Size]: 57 * long, 28 * wide and 18 mm thick; [Applicability] Diameter of seat pipe: 18-32 mm; Characteristic: 1. The product has a novel rectangular ring design, highlighting the COB lamp belt, highlighting the fashion trend and technological atmosphere. 2. The high-brightness COB lamp band consisting of several LEDs is equipped with PC transparent red lampshade. The lamp can be seen from a long distance, and it can still be seen during the day. At the same time, the visual angle can reach 210 degrees, which fully guarantees your riding safety. 3. CNC precision aluminium alloy shell design, with beautiful, strong, durable, fast heat dissipation and other advantages. 4. Waterproof design, USB charging interface is covered with expandable rubber, button switch plastic, lampshade plastic shell and sealed aluminum alloy body are sealed by high frequency welding, can ride in rainy days, can not be immersed in water for a long time, need to dry in time. 5. Multifunctional design, the product back can also be loaded with clips (clips), oh, can be clipped to bicycles, belts or shoulders or backpacks, school bags and other carry-on items; in your night running, cycling, race walking, play a safety warning role, to protect personal safety! To meet the functional requirements of cycling! 6. Intelligent induction design: In the intelligent induction mode, the light in the dark is turned on. When the light from the outside reaches a certain brightness, after a period of time, the light will not turn on. When the light from the outside reaches a certain brightness, the light will turn on again (the induction mode is not very sensitive, when the light is sufficient, it will take a long time to sense the light out). 7. USB interface charging (can be charged with USB interface of home charge, computer or mobile power supply, voltage can not exceed 4.2V), using lithium ion polymer battery (3.7V, 500MAH), can charge and discharge back and forth, charging speed, discharge time is long, saving the battery more environmentally friendly, generally charging 2-4 hours, discharge time is about 1-2 hours; when the lamp is dim, do not turn on the car lamp, otherwise it is possible. If the battery is damaged, please charge it in time. If the lamp is not used for a long time, the self-discharge of the battery will also deplete the power and lead to over-discharge. Therefore, please keep the charging frequency once every two months. 8. Bring a red power indicator, when to charge it is clear at a glance. When charging, the red indicator lights up -- indicating that it is charging; the red indicator lights up all the time -- indicating that the charging is completed and the charging stops. 9. Silicone rubber strap with adjustable thickness is suitable for 18-32mm seat tubes of various thicknesses. Front and rear forks are available. Specification General Type: Tail Light,Front Light Material: Aluminum Alloy Placement: Handlebar Suitable for: Mountain Bicycle Features: Waterproof,Low Power Consumption,Superbright,Easy to Install Power Supply: Li-ion Battery Best Use: Climbing,Camping,Hiking,Backpacking Color: Black,Red Dimensions and Weight Product weight: 0.0900 kg Package weight: 0.1500 kg Package Contents Package Contents: 1 x Mountain Bicycle Lamp