Power bank built-in powerful magnets make wireless charging fast and convenient. The magnets can be precisely aligned and fit with your phone, which greatly increases the speed of wireless charging. The built-in smart chip can automatically identify and charge most devices on the market. automatically adjust the output to deliver the most suitable current, keep your devices from overcharging, over-current, over-voltage and short circuit to protect the safety of your products. Made from plastic material, measuring 4.13*2.64*0.83 inches, this custom magnetic 15w wireless fast charging apple iwatch & cell phone all-in-one portable power bank. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. We offer logo printing and full packaging customization. Product Highlights: Compact size, lightweight, easy to carry.