Watch designed for the best diving experience. 100M (10ATM). Gps. E-Compass. Modes: Air / Nitros / Free Dive / Gauge / Off. Rechargeable battery. Multi-language. Illuminated display for easy visibility. BUHLMANN CHL-16C decompression model. Visual alarm with vibration or sound. Measure 50.5x50.5x18 mm. Silicone strap. Battery life in Smart mode +10 days / hour mode +15 days / diving mode +40 hours