The Suunto D4f is a lightweight yet rugged freediving computer designed to elevate your performance underwater while offering a sleek look for everyday wear. Whether you're freediving, spearfishing, or snorkeling, the D4f delivers real-time data and tools to help you dive smarter and train better. Key Features: Depth Tracking: Displays current and maximum depth with a range up to 100 meters, giving you full confidence on every dive. Dive Time & Surface Interval: Automatically tracks your dive time and surface intervals to help you maintain safe and efficient dive profiles. Apnea Timer: Built-in apnea timer is ideal for training breath-hold techniques and improving performance. Logbook Memory: Review your dive history and track progress with the detailed digital logbook. Robust Construction: Housed in a durable, lightweight composite case with a stainless steel bezel and mineral crystal glass for exceptional durability and style. Comfortable Strap: Supplied with a soft elastomer strap for secure comfort, even during extended sessions in the water. Connectivity: Upload your dive data to Suunto DM5 and Movescount using the optional USB interface cable (sold separately). Versatile Use: Perfect for freediving, spearfishing, and snorkeling. Trusted by underwater explorers worldwide. Color: Black