GooseWhite QI-ELF, Small But Powerful 1A Qi Charging HotSpot for All QI Wireless Charging Devices including Nexus 5, Nexus 4, Lumia 820, 920 and Samsung S3,S4 and Note 2 (Samsung devices require adaptor which is sold separately) The smallest Qi-enabled wireless charging pad, ideal for use on the road, can be powered from your laptop Compatible with all Qi standard devices. Built in buzzer and LED light to indicate charging status. Protection function automatically stops charging when the unit is fully charged Perfect component to be embedded into your desk, nightstand or other DIY project Input 5V, 500mA - 1500mA, Output 5V, 800mA - 1000mA. Circular form factor, Diameter 58.4mm, thickness 10.4mm Built in cable length 30cm, Works with USB extension cable up to 100cm