DRYBAG-7L Scuba Regulator Combos There’s also a shackle key

There’s also a shackle key and a line cutter

Here's the listing for the Shearwater Peregrine Black:

this high-performance regulator is built for divers seeking exceptional breathing comfort and reliability—dive after dive

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prepares you for future specialty training

DRYBAG-7L Scuba Regulator Combos There’s also a shackle keyMeet the versatile 7 Litre Drybag, an essential waterproof companion for divers and adventurers. With a 7 litre capacity, this durable dry bag shields your valuables from water damage during any aquatic endeavour. Its robust design ensures reliable protection, making it a must have for keeping essentials safe and dry on every dive.