The Ledlenser K6R 4GB combines a small rechargeable keyring torch with a 4 GB USB flash drive. The fold-out USB-A connector is used both to recharge the built-in lithium-ion battery and to transfer files, so you can carry documents or photos on your keys together with a useful light. The torch gives up to 400 lumens in boost mode with a beam distance of about 80 m, which is plenty for finding a keyhole, checking under a car seat or lighting a path. The housing is made of aircraft-grade aluminium alloy and is splash resistant (IPX2). It measures about 62 mm and weighs around 30 g, so it adds very little to a key ring. This grey version is end-of-line stock from Ledlenser.