Timex's Deepwater Meridian 300 HEV Automatic is a diving watch with a unique feature: a helium escape valve. This valve, positioned at 10 o'clock on the case side, is designed to release helium that seeps into the watch during saturation diving, preventing it from expanding and potentially shattering the crystal during ascent. While it's unlikely that most owners will ever use it, the valve adds a distinct character to the watch, setting it apart from other dive-styled watches. The watch features a 44 mm grade 5 titanium case with 300 m water resistance, a Miyota 8215 automatic movement, and a screw-down crown with integrated guards. The strap is made of HNBR synthetic rubber, chosen for its heat and chemical resistance. The watch is priced at $999, which is more than double the price of its steel predecessor, the Deepwater Meridian 200. Despite the higher price, the watch is still on preorder, indicating its popularity among diving enthusiasts. The helium escape valve is a unique feature that adds to the watch's appeal, making it a standout choice for those seeking a reliable and durable diving watch.