I stored this item in a dark place after using it once. I confirmed its operation during the photo shoot, and it works without any problems. I don't think there are any stains, but please refrain from purchasing if you are sensitive to used items, as it has been handled by a person once. [Product Specifications] Power Supply: DC5V 1A Power Consumption: 5W USB Port Type: Type-C USB Cord: Approximately 750mm Rechargeable Battery: Lithium-ion battery 3.7V 1200mAh Charging Time: Approximately 4 hours Continuous Usage Time: Approximately 1 hour (high) to 5 hours (low) Size: Approximately H140 x W63 x D38mm (excluding silicone ring) Weight: Approximately 88g Materials: Body: ABS, PP Silicone Cover: Silicone rubber Neck Strap: Polyester Country of Manufacture: China