DTNo1 HD8 is a lightweight smartwatch that connects to your phone via Bluetooth 5.4. It features a 1.29-inch, 360×360 touchscreen, heart-rate and SpO2 monitoring, sleep and daily activity tracking. It provides phone notifications, Bluetooth calls, and music control, with NFC on select models. IP68 water resistance protects against water and dust. The 230 mAh battery typically lasts about 5–7 days depending on usage, making it suitable for everyday wear and workouts.