Cool B3 1 has excellent screen display effect and good feel, which is much better than the products that cost more than 200 yuan before. The display of the call bracelet is clear, the call quality is good, and the music playback effect is excellent. The reference error of heart rate and blood pressure is basically small, and the step counting function can also be synchronized with the mobile phone. The design is very atmospheric, and the battery life is also very strong. The functions such as heart rate, steps, weather forecast and alarm clock are very cost-effective in similar products.
The screen of Cool B5 1 is also displayed in color. I didn't understand this cool B5 1 smart bracelet for the first time, but I soon understood it. Just download the corresponding app and you can start using it. It's convenient to run without a mobile phone. Sleep monitoring data is also very comprehensive, real-time heart rate monitoring function is very practical, you can know your heart rate at any time, you can view it without switching function interfaces, which is very popular. I have two friends who have bought them, and everyone likes the good things.