Check the listing for details. NiteRider scuba dive light system canister Pro Diver. Condition: Used. Listed at 200.00 USD. NiteRider "Pro Diver" canister light system.Battery module can be used as a stand-alone light and hand-carried.Or strap the external 5W/10W head module to your shoulder, connect the cable to the battery module, clip the module to your BC and use the system in a hand-free mode.Included:Battery module for 5 D batteries Battery module BC clipBattery module handleShoulder module with 2 modes of lighting - 5W and 10 WReflector with a bulb and clear housingSpare clear housingBrass snapbolt attached to the shoulder module - to clip the module to your BC D-ring.instruction manualProduct brochure from 2003The marketing picture shows that you can wear it on your forehead, but I think you are going to need additional harness for it (not included)The device is around 19-20 years old. Has may be around 20-25 dives on it, has been sitting in storage for the last 10 years.Takes 5 D-size batteries (not included). The device was tested on the surface and is fully functional. The manufacturer appears to be out of business, so I don't know how much it's worth - but twenty years ago it was a high-end DIR unit.Make me an offer.