Dual Wall / Travel AC Charger compatible with Oticon Streamer - One Charger for up to two devices with upgradeable Gomadic Brand TipExchange Custom designed advanced circuit provides precision output voltage and current regulation specific to the Oticon Streamer (accurate to 0.1v). The additional charging port is available for simultaneous charging of a secondary device. Gomadic TipExchange Technology protects your investment by providing a means to change or upgrade your charger by simply swapping the physical charging tip. Oticon Streamer specific tip as well as standard microUSB and Female USB tips are included. Additional tips sold separately. A full 10W of available charging current (e.g. 2,000mAh) is available for rapid charging. Considerably higher available current compared to standard Oticon Streamer wall chargers. Specification: Input Voltage (100 - 240vAC), Cable length (50 inches), Transformer Dimensions (2.0 X 1.75 inches), Foldable Adapter (Yes), Circuit Design (Oticon Streamer Supported), Charging Ports (Two) The Gomadic ""Power Sleep"" feature cuts latent power draw by over 99%. Charger goes to near dormant state when not in use.