If you have an Oceanic Pro Plus X Dive Computer (see SKU: OCNPPX) and have lost or need a spare USB/Charger PPX this is what you're looking for. A fully charge computer will give an average of 55 to 60 dive hours before requiring to be recharged. Charge time is approximately 3 to 4 hours. Alternately, the USB/Charger can also be used to download dive data from the computer to a PC or Mac computer that is equipped with Oceanic's Divelog Software.