XDREAM X-Power XL Smart and Slim Power Bank - Retail Packaging - Green Ultra Slim & Lightweight. At .35", the X-Power XL is the industries slimmest and at 4.76oz it is also the lightest. Designed to go where you go. Durable. Strong, durable shell made of polished aluminum and coated with an anodized coating Smart. XDREAM's Smart Detect technology easily detects device voltage. One port for charging, no special cables needed. Compact. Easily carry the X-Power XL in your bag, purse or pocket. Colorful. Available in multiple vibrant colors designed to fit your style.