Gomadic Multi Port AC Home Wall Charger designed for the Sony Walkman NWZ-E438F - Uses TipExchange to charge up to two devices at once A full 10W of available charging current (e.g. 2,000mAh) is available for rapid charging. Considerably higher available current compared to standard Sony Walkman NWZ-E438F wall chargers. Gomadic TipExchange Technology protects your investment by providing a means to change or upgrade your charger by simply swapping the physical charging tip. Sony Walkman NWZ-E438F specific tip as well as standard microUSB and Female USB tips are included. Additional tips sold separately. Custom designed advanced circuit provides precision output voltage and current regulation specific to the Sony Walkman NWZ-E438F (accurate to 0.1v). The additional charging port is available for simultaneous charging of a secondary device. The Gomadic ""Power Sleep"" feature cuts latent power draw by over 99%. Charger goes to near dormant state when not in use. Integrated fail-safe internal circuitry provides comprehensive protection of all attached devices from power surges, overcharging and short-circuiting.