Light & Motion has been proudly designing and manufacturing innovative, high-quality bike lights since the early 1990's in Monterey Bay, California. They have been a leader in the industry since the beginning--pushing for higher product standards, integrating rechargeable batteries, and converting to premium Cree LEDs for the best light quality. The compact and lightweight Vis 1000 FC provides unmatched visibility and safety features for both on-road and off-road cycling. Because of its high intensity, it can be used as a primary handlebar light or a secondary helmet light. Included is a GoPro adapter that will allow you to set-up on nearly any cycling computer mount and a helmet mount can also be purchased separately. An optional one-touch toggle feature gives the rider the convenience to adjust only between high and medium outputs, allowing the rider to conserve battery during climbs then quickly toggle to the higher output for descents. Other safety features include bright amber colored side lights that emit 180 degrees of visibility—statistically degreasing odds for a collision with another road user. A color coded battery indicator also gives the rider the batteries charge during use and while recharging. The integrated Li-Ion battery can be recharged using the provided Micro USB cable and Fast Charge technology (FC) allows the light to recharge in 2. 5 hours when using a 2A adapter. A minimal . 5A will charge the light in 6 hours. This means you can use your phone charger, computer, laptop, and most other USB power sources to charge the light wherever you may be. The unit is also tested to withstand repeated 1 meter drops on concrete and is fully waterproof for rainy days or muddy conditions. To the relief of every customer, Light & Motion backs each product with a 2-year from manufacturing defects and faulty workmanship. Beyond that they are able to repair and replace lights for a nominal fee. They have online resources to find manuals and troubleshoot issues as well as an excellent customer care team.