Cool On The Go Recharge is a revolutionary personal cooling system that was designed with convenience in mind. It's lightweight and features a compact design that leaves your hands free as you're working or playing in the heat! While other personal fans are often bulky hand-held products that barely produce any airflow, the Cool On The Go Recharge PUMPS out air! It provides users with 4-8 hours of a continuous steady airflow to help anyone keep cool and refreshed. Suitable for all ages! Ideal uses include:• Baby Stroller Fan• Infant / Child Car Seat Fan• Crib Fan• Desktop Fan• Camping Fan• Use at Sporting Events• Playing Golf• Gardening• Poolside• Concerts• Many More – Use Your Imagination! Cool On The Go Recharge provides up to 4 hours of hands free, continuous cooling use on high speed and up to 8 hours on low speed (using the included Cool On The Go batteries). The batteries can be replaced with any Alkaline or rechargeable AA size batteries (don't mix&match batteries). Charginig/Power Note: Cool On The Go Recharge can only recharge the batteries using the included High Performance 7.5 Volt AC CHARGER. Cool On The Go Recharge works as a battery charging station for AA size rechargeable batteries too! The USB cable will power the fan using any standard USB adaptors or PC/MAC USB port. Package includes:• Revolutionary Cool On The Go Recharge Fan• 4 AA sized NiMH Recharge On The Go Batteries– Made just for Cool On The Go! • 7.5V High Speed Wall Charger (will recharge Cool On The Go batteries or any other HiMH).