Mingdaln 2.1" AMOLED Men Military Smart watch，with Fitness Tracker/ Answer Make Calls /100+ Sport Modes/1ATM Waterproof, Mountain Travel Pedometer Watch fits for Android and Iphone Devices (Black)

Screen size: 2.1 inches，AMOLED screen Screen resolution: 240X296 HD Full touch screen System requirements: Support Android 4.4 and above, IOS 9.0 and above mobile phones, Waterproof grade: 1ATM Wireless version: 5.3 Battery capacity: 650mAh,Three times the battery capacity of traditional smartwatches, with a 300%+ increase in battery life. Normal use time: Light use: 20-30 days; moderate use: 10-20 days; frequent use: 1-10 days. Strap material: silicone Color: black Watch packaging: smart watch x1, charging cable x1, manual x1 Instructions for use： 1.need to download the accompanying app (there is a QR code in the manual and on the watch). 2. Open the accompanying app and bind the Mingdaln smartwatch with one click. 3. If you encounter a disconnection issue, please confirm that the accompanying app is running in the background of your phone. This is necessary. 4. All data on the watch is for reference only and should not be used for any other purpose. 5.It is not recommended to immerse the watch in water for long periods of time or expose it to water above 40 degrees Celsius, as this will affect the watch's water resistance and service life. 6.The time and weather on the watch can be synchronized with your phone settings. If synchronization is not enabled, you can turn it on in the watch settings. 7.The watch cannot reply to messages. 8.If you encounter other issues, please contact the store's customer service for assistance, or read the FAQ below.