NoIR Fit Over U40 (Amber) Clocks white letters on a dark

white letters on a dark background--making it easier to find the size you need

This provides a brighter field of view without an additional light source

Filter Number 40 (Amber)

This acrylic lens magnifying dome provides a distortion-free magnification and has a calculated light guidance that directs all possible illumination onto the object

NoIR Fit Over U40 (Amber) Clocks white letters on a darkLarge Fit Over features SideShield and brow protection. Provides 100 percent Ultraviolet (UV) protection. NoIR filters can increase mobility and provide relief from the discomfort related to vision impairments. Filter Number 40 (Amber) Reduces glare Enhances contrast Maximizes visual clarity Helpful on hazy, overcast days Blue light blocker Frame Dimensions & Sizing Large: Inside: 6. 1 in. (155mm) x 2. 0 in. (52mm)Outside: 6. 2 in. (158mm) x 2. 1