The Supa-LED 80 Lumen LED upgrade module can convert an incandescent 2- 3- 4- 5- or 6 D-Cell torch-flashlight into an LED torch-flashlight. The Supa-LED 80 Lumen upgrade module will increase the run-time of your torch to over 70 hours- making your torch a more economical and effective lighting source. The 80 Lumen LED Upgrade module has an expected life of 30-000 hours.