"Heater Wrap Sheet" has a built in wire free heating system. The
Active Heat Fabric is designed to protect cameras, lenses, eyepieces and
astronomical accessories during night photography sessions where optics are
prone to become wet from dew. The cloth will also extend the battery life
of your camera and other powered equipment when the temperature is low.
When the heat cloth is folded, the attached parts adhere to each other.
You can create a pouch or pocket with the clot in which to hold your camera or
lens safely without any extra fasteners.
The Heat Cloth is powered with a USB plug that attaches to a power source of 2
amperes or more. The Heat Cloth will operate for 3-5 hours, depending on
your power source and the temperature.
AHF Cloth Material; Polyester
AHF Heater Element: Nylon with silver plating
Power Source: External USB power (Not included);
Power Cable: USB cord with magnet contact
Operating Hours: 3-5
Electricity Consumption: DC5V 1 ampere (4 watts)
Warming Temperature: Room Temp 68 deg - warm to 104 dg
Temp 50 deg - warm to 86 deg
Size: 17.7" x 18.5"
Country of Origin :Japan