Create a strong marketing promotion with the Power Bank 4400! This compact power bank houses a powerful 4400 mAh charging capacity with input and output at DC 5V and 1 Amp. Featuring an ideal white background for your company name or logo, this 1.81" x 3.5" x 0.88" mobile accessory is great for smartphones and digital music players. A power bank USB charging cord is included for added convenience. Charge up your next campaign for success!