Old Cheng Jing changed the key battery.

Use CR2032 battery. Old Cheng Jing usually uses CR2032 battery when changing keys. The battery capacity is large, which can ensure the normal use of keys. When changing, you need to turn off the power supply, connect a new battery, and then restart. Cheng Jing bus is a kind of bus specially used for traveling, with comfortable seats. It can guide tourists to local tourist attractions, facilitate tourists to visit and let tourists appreciate the rural customs. It is a convenient, fast, accurate and practical tourist vehicle.