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Ding Ding Ring is design for housewifes, old elders and deaf persons.
It can help them that cant miss any people and events.
The exterior of Ding Ding Ring is made from silica gel, and convey the
message by Bluetooth.
When someone press the doorbell, Ding Ding Ring can shock and lightly.
You can talk with someone outside of house by horn, when you arent ready to open the door.
When you want to charge, you can put it on the battery charger directly.
The battery charger can display the light when the battery is charging.
Bi Yin Su