The OnePlus Watch 4 in Midnight Titanium is a robust smartwatch designed for Android users who need a blend of durability and intelligence. Its 47 mm round case is crafted from a titanium alloy and protected by sapphire crystal, meeting MIL-STD-810H military-grade standards to withstand harsh conditions. The 1.5-inch LTPO OLED display offers a crisp 466 x 466 resolution, and it includes a wet-hand touch control feature that ensures the screen remains responsive even in damp environments. To keep you connected and healthy, the watch integrates Google Gemini AI and a 60-second Health Check-In, supported by a comprehensive suite of sensors including a heart rate monitor, SpO2 sensor, and a thermometer. Under the hood, the device uses a dual-engine architecture pairing a Qualcomm Snapdragon W5 Gen 1 with a BES2800 chip, giving you 2 GB of RAM and 32 GB of internal storage for smooth performance. This efficiency extends to the 646 mAh battery, which provides up to 70 hours of use or up to 16 days in power saver mode, and it can be fully recharged via a magnetic charger in about 1.2 hours. For those who are active, the watch is water-resistant up to 50 meters and resists seawater corrosion, making it a reliable companion for swimming or outdoor adventures. It comes with a comfortable black fluoro rubber strap that fits wrists from 140 to 210 mm, weighing only 43 g for a lightweight feel during daily wear.