1. We have the watch case in black color. If you choose the black color, we will send the watch case in black color with black bracelet or silver watch case with black bracelet randomly. If you choose the gray, green, or red color, the watch case will be silver. 2. One charger will come together with the watch. There are 2 types of the charger. One supports normal USB port, the other type supports Type-C port. We will send the charger randomly of the 2 types above. 3. If you have any requirement, you can add remark in your order or leave message to us, we will try our best to meet your requirement. Q&A 1. Is the watch water proof? It is IP67 water proof, it can not put in water, please do not put it into hot water or salted water, also do not suggest to put in water directly. 2. Does it have camera? No, it does not have camera, but it can remote control the camera on your phone to take photos. 3. Does sms synchronization support? Old Sms messages synchronization is availabe for Android phones, but disable for iOS due to the restriction of iOS system. But for iOS, the watch can synchronize incoming message from Notification Center and display the message content under Notification icon, not the Message icon. You can receive the message notification of SMS, Whatsapp, etc, when there is an incoming push message on your Phone both Android and iOS. You can view the message content in the Notification. 4. What is the function of the round wheel button? It can be scrolled to select clock face and do selection DO NOT pull up it. If it is pulled out by yourself, we will not take responsibility for change or claim. 5. Is the measuring result accurate? Due to the heart rate/ECG/Blood Pressure monitor device is not professional medical or sport detecting instrument, the result might be not very accurate as those professional instrument. This function is just for fun. You may use profession instrument if you need more accurate data.