Handy cooler :
1)Semiconductor Peltier-Thermoelectric module
2)Cooler mode max 18 Degree celsius
3)Li-thium ion battery insde 2200 mah.
4)Working time :Around 2.5 Hrs continously & charging time around 3 hours.
Neck cooler :
1)Warmer mode : 20 degree -25 degree higher than ambient tempearture. 2)Cooler mode : 14 degree to 17 degree lower then ambient tempearture. 3)USB power supply.
4)Adjustable size for most people.
5)Avalable in different modes :Cool mode,Warmer mode & Turbo mode.