Easy to attach to a hat, 18-lumen LED headlamp. Although it is unused, please understand that it is a used item. Please refrain from purchasing if you are sensitive, a perfectionist, or concerned about packaging. It is stored at home. Shipping will be via Yamato Transport, using the most cost-effective method. Thank you for your understanding. - Type: LED headlamp - Brightness: 18 lumens - Power: 2 coin batteries - Attachment method: Clip-on to the brim of a hat - Usage: Outdoor activities, night work Thank you for looking.