Ventilation Fans features: This product is a professional and practical clip-on electric fan, made of safe, plastic, safe and durable, and can well meet your needs. It has a simple design, comfortable and versatile, and can bring you a cool feeling in the hot summer. With a wide range of applications, it is an excellent choice for vehicles, offices, homes, etc. Features-Material: Plastic.-Size: About17.00X14.00X8.50cm/6.68X5.50X3.34inch.-Input: 5V 1A.-The output power is 3W (MAX).-Charging time is about 4-5 (h).-Battery specification: 4000 mAh.-Novel and durable, easy to carry, comfortable to use, will bring you a good experience.-Fine workmanshlp, excellent texture, not easy to damage, and durable for a long time.-Simple and practical, easy to install, stable and reliable, it will be your good choice.-Portable and compact, convenient and practical in the bedroom and outdoors.-You can give a beautiful and practical fan as a gift to your friends, and they will like it very much.