Can be filled with about 10ML Zippo lighter oil. A full pot can be filled with twice oil for the Zippo lighter, and 1/2 of the oil from the plastic measuring pot for the holding/hand warmer (6 hours hot).

Introduction] It can be used as a key chain to carry around in order to solve your urgent need when there is no oil outside or when you run out of fuel for the furnace/hand warmer.

[Notes] The sealing property of the oil can mainly depends on the sealing ring. In transportation, vibration causes the sealing ring to deviate, resulting in oil leakage. Please carefully check whether the sealing ring is deviated before use. If there is a reset, it will be good!