The OnePlus Watch 4 is currently being sold at a discounted price on AliExpress as part of their "Deal of the Day" promotion. The watch is listed at 212.16 euros, and with a 20 euro coupon, the final price drops to 192.16 euros. This smartwatch is designed for both fitness and daily use, offering a blend of performance and durability. It features a titanium alloy casing, which is both lightweight and strong, and a 1.5-inch LTPO OLED screen with a resolution of 466 × 466 pixels. The screen uses LTPO technology, which allows it to adjust its refresh rate based on the user's needs, helping to conserve battery life. Under normal outdoor conditions, the screen can reach a brightness of 1,500 nits, and it can go up to 3,000 nits in specific sports scenarios, ensuring visibility in bright conditions. The watch is protected by sapphire crystal glass, known for its scratch resistance, and has a 47.4 mm case with a thickness of 11 mm. It weighs approximately 43 grams without the strap, making it comfortable for extended wear. The titanium casing helps keep the watch lightweight despite its size. It also has MIL-STD-810H certification, which means it is tested for durability in extreme environments, and it is resistant to corrosion from seawater, making it suitable for both sports and everyday use. The OnePlus Watch 4 uses a two-processor design, combining the Snapdragon W5 chip with the BES2800 chip. The Snapdragon W5 handles more demanding tasks, while the BES2800 manages lighter tasks and power efficiency. This setup allows the watch to run on Wear OS, Google's smartwatch operating system, while keeping power consumption in check. The 646 mAh battery offers up to five days of use in smart mode, three days in intensive use, and up to 16 days in power-saving mode. A full charge takes about 75 minutes, making it convenient for users who want to minimize charging frequency. The watch includes a variety of health and fitness tracking features, such as stress monitoring, sleep quality analysis, and physical activity tracking. It also supports numerous sports modes, allowing users to track different types of exercise. Additionally, it features Google Gemini, which allows users to dictate SMS or messages using voice commands, eliminating the need to take out their phone. The OnePlus Watch 4 is designed to provide long battery life, a high-quality display, and efficient performance, making it a good choice for users looking for a smartwatch that can last several days on a single charge while still offering a wide range of functions for both activity tracking and connected use.