Boost your brand when you give out this to customers.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.Great ideal for business,conference,office,meeting,working,restaurant,school,test field,business travel and many more! Made from pvc material, measuring 3.4*3.1*1.1 inch, this custom digital display lanyard 5000mah portable power bank. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Tailored branding: Supports logo imprint and design personalization. Product Highlights: Compact size, lightweight, easy to carry.