The weight of a Zippo lighter depends mostly on the style, there are both slim and full sized Zippos, but there can also be small variations due to the design (some may have a raised metal design which adds more weight.)
The average full size Zippo lighter weighs about 78g to 79g (2.751 oz to 2.787 oz). The average slim style Zippo lighter weighs about 66g (2.328 oz).
Authentic Zippo lighters are available on Zippo.com, Zippo/Case Museum store, and through authorized Zippo retailers in more than 160 countries around the world.
Infringing lighters have misled consumers over the years. Many counterfeit lighters look a great deal like a real Zippo lighter. Zippo enthusiasts know that authentic Zippo lighters carry the Zippo bottom stamp and the Zippo trademark stamped on the lighter insert.
The famous Zippo Lifetime Guarantee also accompanies every genuine Zippo lighter. If you spot a fake Zippo lighter, contact them immediately.