Is it even possible? Less than two ounces and 75 brilliant lumens? Yes and yes. This little keychain light runs on only one AAA battery and is just over three inches. With focusing options for long-distance, up-close and all points in between, this little powerhouse may just be the final word in compact lighting.SPECSLENGTH: 3.66 in | 9.30 cmWEIGHT: 1.48 oz | 42 gBATTERY TYPE: 1 x AAARECHARGEABLE: noIncludes:-Lanyard-Keyring-SheathLED Lenser WarrantyThey take extraordinary measures so your Ledlenser product will give you many years of dependable service. If it doesn't, they will gladly repair or replace it, at their discretion, with one of equal or greater value under their 5-year guarantee. This warranty does not cover abuse, alteration, theft, loss, or unauthorized and/or unreasonable use of your Ledlenser product. This warranty does not cover sheaths, accessories, imprinting, or color finishes.