The Mares Puck 4 Dive Computer allows you to discover the underwater world, an entry-level diving computer which uses the advanced Bühlmann ZH-L16C algorithm, it's feature-rich but easy to use, it offers various modes with user-friendly controls and a crystal-clear display. The Puck 4 is a reliable computer thanks to a user-replaceable battery and you can stay connected via Bluetooth, a perfect blend of simplicity and innovation while you explore the depths and enjoy your underwater adventures! The Mares Puck 4 includes practical tools such as the decompression dive planner and digital logbook, among others user-friendly features and intuitive controls. Available in two different colours: Aqua or Black. Features: Integrated Bluetooth enables direct connection to your smart device, facilitating easy data transfer and analysis via the Mares app Customisable Bühlmann ZH-L16C Algorithm provides a personalized and safe underwater experience; Versatile Dive Modes, from air to nitrox and bottom timer; Multigas Capability, up to three gasses; Segmented Display Excellence, the crystal clear display is created with chip-on-glass technology and boasts 800 segments; Functional Bottom Timer mode with a resettable average depth and stopwatch, adding practicality to your dive experience; Decompression Dive Planner: plan your dives with precision using the decompression dive planner, allowing user-adjustable surface intervals for safer underwater excursions; Digital Logbook, with a capacity of 100 dives complete with graphs accessible via the Mares app for comprehensive post-dive analysis; Long Battery Life: the user-replaceable CR 2450 battery ensures a reliable power source, with a lifespan of up to 100 dives; Seamless Connectivity: integrated Bluetooth enables direct connection to your smart device, facilitating data transfer via the Mares app; Intuitive Single-Button Control: navigate effortlessly with a single button; Adaptable Straps, easily removing and replacing straps with a bungee for added comfort and flexibility; Mission Console Compatibility: connect seamlessly with the Mission Console for a comprehensive dive data overview; Effortless Firmware Updates.