For locksmith, no need to have many different remote in . If you have KD900,KD900+ ,URG200,-X2, MINI device, you can use this remote to genrate a new remote for many . Also you can check the supported car model after downloading the "Mobile " from application App . This key comes with only circuit board, no chip/battery/blade inside. You can buy the blade type you need for KD900 remote key to work with. Condition: High quality Part Number: B31 B Series KEYDIY remotes. Type : Remote Key Button: 4 Buttons Electronics: YES Transponder Chip: NO Battery/ Blade: No Colour:black Material:ABS Package Contents: 1 x Car Remote Key Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.