The new generation of L ri-scope® otoscopes with optical glass encloses Excellent optical characteristics and unmatched performance with the reliability and efficiency of LED/lithium-ion technology. - Optical fibers for optimal light radiation and transmission. - Two-way swivel, 3X sealed optical glass - Suitable for pneumatic testing (supplied without pump). - Handle C: Powered by Li-ion batteries, not included. Supplied in an elegant hard case with a spare bulb, 4 reusable ear tips and 3 disposable ear tips. Replacement ear speculum: Use 31817/31819 or 31485 to 31499.