Features1The brightness can be adjusted, and you can choose the corresponding brightness according to your needs. 2With holes for eyeglasses legs, it is convenient to wear glasses. 3The plush lining protects the heads from cold. 4The lamp is detachable. When the lamp needs to be recharged or the cap needs to be cleaned, you can remove the lamp. 5With a power indicator, the red light is on when the battery is not fully charged, and the green light is on when the battery is fully charged. 6Lengthened ear protections design helps keep your ears warm when outdoors.SpecificationThis hat can not only keep warm, but also has a lamp on it to provides bright when running, fishing or Cycle at night. Features:The brightness can be adjusted, and you can choose the corresponding brightness according to your needs. With holes for eyeglasses legs, it is convenient to wear glasses. The plush lining protects the heads from cold. The lamp is detachable. When the lamp needs to be recharged or the cap needs to be cleaned, you can remove the lamp. With a power indicator, the red light is on when the battery is not fully charged, and the green light is on when the battery is fully charged. Lengthened ear protections design helps keep your ears warm when outdoors. Specifications:Color: black Material: Polyester+Spandex Applicable heads circumference: 540-620mm Battery: 3.7V, 200mAh Item weight: 65g / 2.3ounce Package size: 150 * 110 * 20mm / 5.9 * 4.3 * 0.8in Package weight: 72g / 2.5ounce Packing List:1 * HatPackage List1 * Hat