With an unbeatable combination of a small pocket-sized form factor, a large high-resolution 2.8” color LCD display, and some of the lowest pricing in the industry, the OWLTrek II OTDR from OWL is the WISE choice for cost-conscious buyers who only need to perform basic troubleshooting or restoration tasks on multimode optical fiber networks. All this from an OTDR that really is pocket-sized and fair priced, yet having comparable features and specifications to other OTDRs in its class.
http://www.owl-inc.com/literature/sub/pdf/brochures/wto2-mm-031419.pdf