Bergeon 6929, case opener

Used for watches with pressure back cases where the case back is usually firmly attached and for watches with pressure case backs where the case back is very difficult to get off.

If the case back is of the “ordinary type”, the tool can be used as a crowbar. Choose the blade that best suits the “notch” in the case, insert the blade between the watch case and the case back and tilt the tool downwards.

If the case back is of the “difficult type”, the tool can be used as an automatic driver. Choose the blade that best suits the “notch” in the case back, insert the blade between the watch case and the case back and press the tool against the watch case, the inner hammer of the tool will now hit the shaft with the blade and cause the case back to loosen.

Comes with 2 extra blades: 3.00mm and 4.50mm. width