Keep your lens clean from dew, fog, and condensation when spending hours in cold weather to take photographs. Run the heater on a wall plug, portable charger, or other 5V 2A USB power sources 4.9ft/1.5m prolonged cable provides versatility for use under various circumstances. The temperature regulator offers 3 levels (High Mode: 55-65°C; Middle Mode: 45-55°C; Low Mode: 35-45°C) to suit different ambient temperatures.
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