Product size: 188 x 100 x 205mm, product material: ABS + Silicone. USB Charging & 3 Speeds: The USB rechargeable fan can be easily charged by computer, phone charger, power bank, laptop, etc. Built-in 2400mAh battery, 3 speed settings to meet different personal needs. Free your hands and enjoy: This portable fan can really free your hands, perfect for personal cooling, outdoor sports , indoor sports, office, gym, travel and camping. Adjustable and skin-friendly: The center neck fan is made of soft and lightweight silicone, the angle can be adjusted at will, better fit the skin, effective anti-slip, flexible and not easy to slip. Take a break, refresh, and be more comfortable. Bladeless and Safe: The latest portable neck-mounted bladeless fan improves the bladeless design, emphasizing lightness , security and flexibility. Enjoy cool summer days with our leafless neck fan.