A while back, we told you about ReefNet's Sensus Pro dive tool, a mini dive data recorder that can store 100 hours of dive information. If you've got a Pro, ReefNet wants to offer you $35 (or one of their DVDs) to upgrade to their new matchbox-sized Sensus Ultra.

This new and improved depth-activated data logging instrument can record up to 1500 hours of dive data, like depth and temperature profiles. Apparently, the highly-configurable Ultra resolves depth and temperature to unrivaled precision: 0.5 inches and 0.01 degrees C, respectively. According to ReefNet's Kris Wilk, "To put it in perspective, that's 20-100 times better than most dive computers." Additionally, the press release states that the Sensus Ultra features a dedicated storage space where user data such as certification or medical information may be stored. Very cool.

Sensus Ultra kits retail for $150 and include the data recorder, download unit and the necessary software for Windows XP, Mac OS, and Palm OS. If you're interested, you can take a mini-tour of the Ultra online.