HEINE Beta 100 Diagnostic Otoscope Head. Diagnostic Otoscope with an all metal housing and direct Xenon Halogen illumination. Large-diameter viewing window with 3x magnification made of non-scratch optical glass. The instrument head is matt-black inside to eliminate reflexes. For use with HEINE Sanalon S Specula. Exceptionally tough and durable. Available in 2.5V Standard Battery Operation B-001.11.525 or 3.5V Rechargeable Battery Operation B-002.11.525. Replacement bulbs sold separately 037 (2.5V) & 049 (3.5V). Otoscope head only, handles sold separately.