The APNEA freediving computer combines an easy-to-read LCD display with dedicated freediving algorithms, depth alarms, and MSST (minimum suggested surface time) to support focused breath-hold training and depth tracking. The device shows dive/ascent speeds, temperature, total dive time and depth on a single screen and offers adjustable contrast and backlighting for low-light visibility. A sturdy steel ring nut and a no-break rubber strap provide secure wear for surface and underwater use, while an interchangeable CR2450 battery keeps field servicing simple. The unit includes a pedometer and user-configurable alarms to tailor alerts for depth or time limits.