BIGGER, BETTER, BLUETOOTH. Bigger and better than ever, the ProPlus 4.0 features the latest Bluetooth 4.0 technology. Now divers can adjust and customize all their dive features on the go pre-and post-dive. ProPlus 4.0 boasts a new display area, wider font size, and 22% larger digits than its predecessor (ProPlus 3), making it clearer and easier-to-read than ever before. With Bluetooth compatibility, ProPlus 4.0 adds to Oceanic's commitment to growing the largest family of Bluetooth compatible computers available to divers.