ABS plastic; Wireless version 5.0, with rechargeable 300mAh lithium polymer battery; 3W speaker output; Approx. 30 foot wireless range; USB C charging cable included; Includes a carabiner clip that can be attached to your backpack or bag; 2.75w x 2.75l x 0.75d; 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.