About this product 【Military-Grade Smartwatch & 1.39-inch Large Screen】 Our smartwatches use special composite materials and can pass many military standard tests, such as low-temperature resistance, high-temperature resistance, impact resistance, waterproof and dustproof. This sports watch can definitely be your reliable companion when you're doing outdoor activities. The smartwatch screen uses impact-resistant glass, making it durable and scratch-resistant. Equipped with a 1.39-inch color screen and a high-resolution 360x360 pixel large screen, the image quality is delicate, the colors are bright, and the entire screen is natural and visually comfortable. 【Bluetooth 5.2 Calling Smartwatch & Music Playback】 Equipped with Bluetooth 5.2, compared to the previous 5.0, the communication range is wider, stability is dramatically improved, and high-speed data transmission is achieved. The smartwatch has a built-in speaker and high-performance microphone, so you can make calls without taking out your phone. It gives you the ultimate experience with three-dimensional sound quality. When a call comes in on your phone, the watch vibrates and alerts you with a sound. The caller's name or phone number is displayed on the watch screen. When connected to the dedicated app, you can dial a phone number on the keypad to make a call. You can also add contacts to the dedicated app, and the list added will be displayed on the smartwatch, allowing you to make calls from the list. You can also save call history. 【280 Kinds of Watch Faces Free Setting & 100 Kinds of Exercise Modes & IP68 Waterproof】 You can freely switch between more than 280 kinds of watch faces in the dedicated app Da Fit, and you can also use your favorite photos as watch faces. Change the watch face style according to your mood every day. Equipped with 100 sports modes such as running, walking, and cycling, and when connected to the app, you can measure data such as exercise distance and time. GPS exercise compatible, you can also directly see the exercise trajectory in the app. You can set daily step goals, and better exercise habits and lifestyle habits will naturally develop. It has IP68 waterproof and dustproof performance, and is resistant to sweat, rain, and splashes. You don't need to remove it when washing your hands or face in daily life.