This power bank 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.It can be very suitable to carry both outdoors and while traveling! Can be customized company logo, is as a good choice for publicity, no one will refuse a portable and good charging treasure.t’s lightweight,ideal for post offices,courier express companies,logistic and parcel shipping companies,packaging wholesalers,mail order companies,shipping supplies sellers,office stationery suppliers,online retail stores,home use. Made from plastic material, measuring 5.6*2.7*0.8 inch, this custom portable fast charging 10000mah power bank with lanyard. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization: Logo printing available with multiple packaging and color options. Product Highlights: Compact size, lightweight, easy to carry.