【Military-Grade Smartwatch & 1.39-inch Large Screen】 Our smartwatches are made of special composite materials and can pass many military standard tests, such as low-temperature resistance, high-temperature resistance, impact resistance, and waterproof and dustproof. The smartwatch screen uses impact-resistant glass, making it durable and scratch-resistant. 【Bluetooth 5.2 Calling Smartwatch & Music Playback】 Equipped with Bluetooth 5.2, the communication range is wider and the stability is dramatically improved compared to the previous 5.0, realizing high-speed data transmission. The smartwatch has a built-in speaker & high-performance microphone, allowing you to make calls without taking out your phone. It provides you with 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. 【280+ Watch Faces & 100 Sports Modes & IP68 Waterproof】 You can freely switch between over 280 unique watch faces, and you can also use your favorite photos as watch faces. Change your watch face style according to your mood every day. Equipped with 100 sports modes such as running 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. 【Message Notification Function & 400mAh Long-Lasting Battery & AI Voice Assistant】 The smartwatch will notify you of notifications from Line, Twitter, Instagram, incoming calls, etc., all with vibration. You will never miss any important contacts. Also, the message content and the sender's name or the corresponding app icon will be displayed. This smartwatch has a built-in 400mAh large-capacity battery and can be used for about 7-15 days after a full charge of about 2 hours. 【Practical Functions & Compatible Models】 When used with the dedicated app, you can enjoy various convenient life functions that this smartwatch has. For example, incoming call notification/rejection/call, brightness adjustment, remote camera, vibration ON/OFF, alarm, weather display, music control/playback, raise-to-wake, cinema mode, and other practical functions are available to support your daily life. This smart watch is compatible with Android 4.4 and iOS 8.0 or later.