Charging Time : About 2 Hours. NO CALLING FEATURE-You will receive only notification to See Calls & Messages on Your Wrist: Receive/Rejection call, calendar, SMS and SNS (Facebook, WhatsApp, Instagram,) notifications on display, fitness tracker band let you never miss the messages that matter. Note -Charger is not available with this watch it has inbuilt usb port carefully remove the strap of the watch as u can see the usb port which you can easily connect with any laptop, pc, mobile charges for charging can be attached. Smart Watch for Men/Women/Kids: If you want an all-in-one watch and don't want to wear heavy, then this fitness watch can be your choice. It is designed to keep track of your health and exercise. It tracks your daily steps, calories consumed, distance, continuous heart rate and blood pressure monitoring, records exercise and sleep duration. The watch has USB port you need to attach the USB port with your normal mobile charger or laptop to charge the watch.