ABS plastic and aluminum; Multi-function tech accessory is both a wireless speaker and wireless charger; Wireless charging mat feature is designed to charge most remote wireless charging enabled smartphones (including iPhone 11, 11 Pro, 12 and 12 Pro) and operates at lower temperature than most traditional chargers Check your device specs for compatibility prior to purchase; Power/Technology: Rechargeable Lithium-Ion battery: 37V, Capacity: 400 mAh; Input: DC 5V; Output: 5V/08A (Wireless); Output/Power: 3Wx1(Speaker); Frequency response: 20-20kHz; Wireless V 50; Transmission range: 10M (30 feet); Wireless charging distance: 6mm (023);; Speaker must be charged prior to first use Charge time varies by device Approx speaker playback time: 2-3 hrs, depending on usage; Charging pad must be connected to a power source with USB cable; Note: Most cases must be removed from phone for wireless charging to work; Includes instructions and Micro USB charging cable; CE, FCC Approved; Product Size: 2.375 w x 2.5 h x 2.375 d; Shipping available to contiguous U.S. addresses and Canada via Ground only.  Cannot ship via Air, Internationally or to Alaska, Hawaii, Puerto Rico and any other small U.S. island territory.