Wideview so the Doctor can examine more of the eye. Newly designed with LED bulbs. Lightweight. Frenzel Lenses made of light plastic materials including the lenses, resulting in a comfortable, easy-to-use system. The Frenzels stay in place well during Hallpike and Headshake tests. Large viewing area. The large lenses offer a viewing area sufficiently large to provide clear views of the eyes. The arrangement allows the examiner to see both eyes without partitions or nose pieces in the way. Safe. - Frenzel Lenses are powered by low voltage batteries, eliminating the possibility of electrical shock. Battery pack included. Shipping may take 2-3 weeks Product ID.FL-15.2