Battery Included: Yes, featuring a robust 5000mAh capacity that ensures prolonged heat up to several hours, making it a reliable companion for those cold days. High-capacity battery not only provides sustained warmth but also doubles as a portable power bank. High-concerned chemical: None, ensuring that the product is safe and eco-friendly. Crafted with user mind, this hand warmer is free from any harmful chemicals, making it a perfect choice for everyone including children and the elderly. : , where advanced technology meets traditional craftsmanship to create a product that is both efficient and . This hand warmer is designed to provide lasting warmth during cold days, with a powerful 5000mAh battery that can also as a portable power bank. It is made with eco-friendly materials, ensuring safety for all users, including children and the elderly. The product combines modern technology with traditional craftsmanship, resulting in a stylish and hand warmer that meets the needs of today's consumers. Color: Black Material: ABS+Hardware Package Contents: 1x hand warmer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.