Seiko Watch Key – Case Back Opening

Key designed for adjusting and opening the case back of Seiko watches.The cylindrical design with front teeth is engineered to ensure a secure grip and proper engagement with the case back slots.It can be used manually, without tools, for the most common operations.On the back, there is a hexagonal hole that allows the use of an Allen key, useful when greater torque is required.Suitable for maintenance, quick adjustments, and basic servicing of Seiko watches.