A headband comprises a magnifying lens and a detachable assembly comprising a battery compartment received in a well and including a top recessed member, a ridge in the recessed member, a bottom magnet magnetically connected to the well, and a bottom cover; illumination means including a cavity inside a bottom recess; and connection means including a hollow T-shaped post including a top pivot member, a bottom pivot member having a peripheral groove, and two rounded projections at both sides of the top pivot member for pivotably coupling to the cavity; and a hollow, parallelepiped base including an interior peripheral protrusion matingly coupled to the groove, two opposite side pins pivotably coupled to the recessed member, and a bottom toothed member matingly, pivotably coupled to the ridge. The assembly can be detached by inserting a pointed object into a through hole on the well to disengage the magnet from the well.