The Bigblue TL3800P Rechargeable Tech Dive Light with Extended Battery Life is a self-contained technical light that emits 3800 lumens and runs for up to 30 hours on a fresh charge. The light has a compact body style and uses a reliable push-button switching mechanism, with your choice of four power levels and an SOS function. As a self-contained light, it uses a 32650 lithium-ion rechargeable battery and comes with a charger. The TL3800P also comes with a reinforced Goodman-style glove and an aluminum lantern-style handle, making this light a versatile option for any diver.