Specifications:Made of premium materials, it is safe, eco-friendly, reusable and durable to use.It is suitable to be used in cold winter, holding in the palm, or put it on the place you want to warm, which is portable and convenient.Its highest temperature can reach 80 Degrees to 85 Degrees, after the temperature stops rising, it will automatic power off.Equipped with a lanyard to prevent loss, and USB plug for quick double-sided heating.Item Name: Hand WarmerMaterial: PC, SiliconePower Supply: USB ChargingInput: DC 5.0V/1.5AOutput Power: 7.5WSurface Temperature: Can Reach 80 Degrees to 85 DegreesFeatures: Portable, Rechargeable, Mini Size, with LanyardSize: 10cm x 3cm x 2cm/3.94" x 1.18" x 0.79" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Hand Warmer