Duo wireless earbuds and wireless charging pad – buds charge in compact case; Power/technology: earbud battery: rechargeable lithium polymer battery in each bud: 3.7V; capacity: 35 mAh; input: 5V/60 mA; transmit range: 10m (30 ft); wireless V 4.1; charging case battery: rechargeable lithium-ion battery: 3.7V; capacity: 300 mAh; input:5V/250 mA (Micro USB), 4W (wireless); wireless charger: input: 5V/1.5A; wireless output: 5V/0.8A; Wireless charging mat feature is designed to charge most remote wireless charging enabled Smartphones; Charge time varies by device, minimum 2 hours; Approx. playback time for earbuds: 2.5 hours; Includes instructions and USB to Micro USB charging cable.; This item cannot ship internationally except to Canada via ground. This item can only ship to Alaska, Hawaii, Puerto Rico and any other small U.S. island territory via Air; Product Size: 2.5" dia. x 1.25" d;