Be the center of attention with this stylish aluminum power bank! It comes packed with a high-power efficient polymer battery, available in 4000 mAh and 5000 mAh capacity. Automatically detect and deliver the optimal charging current for any connected device-ensuring the fastest and most efficient charging. Price Includes: Free setups Free virtual proof Free 1 color silkscreen imprint on 1 location Free standard shipping to 1 continental US commercial location Free micro USB charging cable for charging the power bank Free standard box Free Power Bank's User Guide Input / Output: 5V-1000 mA Security Build-in: Short Circuit protection and Explosion protection Security Build-in: Overcurrent, Over charging/discharging protections Certifications: CE, FCC, RoHs Lead Time (including shipping time): Standard Service (business days): Production Time: 5-9 business days up to 1000 pcs, 10-18 business days for more than 1000 pcs; Shipping time: 11-15 calendar days Rush Service (business days): Custom Quote is needed Product Detail: Type: Powerbank Capacities: 4000mAh, 5000mAh Standard Colors: Black, Blue, Silver Imprint Methods: Silkscreen Imprint Location: front / back Imprint Size: MOQ: 50 Item Shape: Rectangle Material: Aluminum Standard Package: Box Item Weight (g): 135