Vibration Mode: Turn on the vibration mode, a strong vibration on the clangorous ringtone, to ensure that you will not pass up any calls and messages.Clamshell Answering: Specially designed for the elderly, with a delicate appearance, you can answer the answer by flipping the cover, which is convenient to use.Large Capacity Battery: Premium lithium battery, excellent power management system, 3800mAh capacity, safe and long lasting battery use, say goodbye to frequent charging problems.