Brand: THANKO Color: Black Design: Wearable Fan Power Source: Battery Powered Style: Compact Product Dimensions: 8.5 cm depth x 13 cm width x 3.7 cm height Features: Portable, Foldable, Lightweight Recommended Uses: Cooling, Travel Voltage: 5 Volts Switch Type: Push Button About this item: Total length approx. 120cm. Accessories: Main unit, 2 size adjustment parts, USB Type-C cable, Japanese instruction manual Weight: 150g (main unit + USB cable) Strong Mode: -10 to -15 degrees Celsius from ambient temperature. Weak Mode: -5 to -10 degrees Celsius from ambient temperature. Usage Time: Approx. 5 hours (5,000mAh) / Approx. 10 hours (10,000mAh) / Approx. 20 hours (20,000mAh) Materials: Main unit: Nylon, Cooling plate: Aluminum