Features 1. Adjustable Shoulder Strap: Our rechargeable hand warmer comes with an adjustable shoulder strap and magnetic buckle, which can be suitable for all age groups according to the length of the palm or wrist, providing on-demand warmth. 2. Intelligent Temperature Setting: LCD screen display, button operation, soft silicone tape, magnetic tape adjustment. Automatic power off when the temperature exceeds 55 , safe and worry free. 3. 360 Surrounding Heating: Soft silicone synthetic PI constant temperature heating element, soft surrounding and fitting, penetrating heat, warming the palm and back of the hand. 4. Liberate Your Hands: This unique rechargeable hand warmer is the perfect replacement for old hand warmers. It adopts a fashionable bracelet style design, providing a cool and fashionable appearance. This is the best choice to free your hands and play with your phone or work while keeping warm. 5. Suitable For Various Scenarios: Our wristband warmer is lightweight, small in size, and easy to carry. It can be used for work, study, and play, freeing hands without the need for grip. Not only can it warm hands, but it can also warm the stomach. Specification Product power: 5W Operation mode: buttons Temperature regulation: four speed regulation Product material: silicone+plastic Charging time: 3-4 hours Usage time: 3-5 hours Battery capacity: 2000 mAh Single device weight: 93g Color box with product accessories: 120G Packaging color box size: 8.2 x 7.4 x 3.5 cm Outer box size: 44 x 20.5 x 32.2 cm ABS body size: 7.2 x 3 x 2.2 cm Silicone tape length: 22.5 cm Color: Black, White, Orange, Purple, Pink Weight: 120 g Package Include: 1x Bracelet Warm Hand Treasure