The Garmin quatix 8 (47mm) is a marine-focused variant of the fenix 8, sharing its core hardware but adding deep integration with Garmin's boating electronics — this AU/NZ/AFR Sapphire edition is built for boat owners and sailors who want to control onboard systems and track conditions from their wrist. It uses a 1.4" AMOLED touchscreen at 454 x 454 resolution under a scratch-resistant sapphire lens, in a titanium-bezelled case dive-rated to 10 ATM (40m) with leakproof buttons and a metal sensor guard. Marine features include remote control of compatible Garmin trolling motors and Fusion entertainment systems, live water depth/speed/heading and wind readouts, tide change and anchor drag alerts, tack assist, race start guidance and a regatta timer, alongside preloaded boating and sailing apps. It also carries dual-frequency multi-band GPS, the Elevate Gen 5 heart rate sensor with ECG, Pulse Ox, a built-in speaker and microphone for calls, Garmin Pay, and Garmin's usual training/recovery metrics for use on land too. Battery life runs up to 16 days in smartwatch mode (7 days with always-on display) and, based on shared fenix 8 47mm hardware, roughly 47 hours in GPS-only mode. This is the pick for anyone who regularly skippers a Garmin-equipped boat; land-based athletes with no marine needs are better served by the standard fenix 8 at a similar price.