Crystal Power Bank in 4000mAh

Juice Up Power Bank 4000 mAh; Input: 5v, 1A; Output: 5v, 1A; Charging Time: 3-4 hours; Size: 122 x 70 x 13 mm; Features: Rubberized Texture Crystal for Engraving,Blue LED Light Up,Luxury Packing Box,Cable included.; Printing Options :; Laser Engraving (inside the crystal)