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The J99 is a standalone smartwatch that runs a SIM card on 4G LTE, so it can make calls and browse without a paired phone. It claims two switchable operating systems and lets you install apps like WhatsApp, YouTube and TikTok from its store. It also packs a camera, heart rate and blood pressure sensors, and a fitness tracker. It suits people who want a phone-free wrist device, but the dual-OS and app claims are unproven and the health sensors are not medical grade.
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The J99 is a smartwatch with two operating systems that you can switch between. It has a 4G LTE SIM card slot, so it can make calls and go online without a phone nearby. It also connects over Bluetooth or Wi-Fi, which covers most features, including app downloads.
You can download apps from the app store, including WhatsApp, YouTube, Facebook and TikTok. YouTube runs on the AMOLED display and streams over 4G LTE or Wi-Fi. A built-in camera takes photos from the watch.
For health and fitness, it has a heart rate monitor that tracks continuously, a blood pressure monitor, and a fitness tracker for steps, calories, sleep and multiple sport modes. Calls, messages and app alerts show on the watch. It pairs with both iPhone and Android.
