... Great solution for travelling, hiking, etc. Test button on the back for testing remaining power Specifications: Capacity: 3500mAh Battery type: Li ... , according your choice!2,Shipping time :EMS :3-7Working days(some countries , not support EMS,Better contact with me 1st ... forget it to confirm this on Aliexpress Feedback Guarantee:1)7 days return and money back guarantee2)All of our products come with 1 ...