Wrap: soft PU;Palm-sized cylinder wireless speaker with soft-PU accent wrap body and no-slip bottom; Pair with your smartphone to use hands-free microphone feature Push button to answer calls; May also be powered with 35mm jack and audio cable (cable not included); Power/Technology: Rechargeable Lithium Polymer battery: 37V; Capacity: 350 mAh; Input: DC 5V; Output/Power: 3W; Aux in: 35mm audio jack; Rated impedance: 4 Ohm; Speaker: 16 inches; Frequency response: 90-20KHz; SNR: = 85d; Sensitivity: 80db ± 2db; Distortion: = 03%; Transmission range: 10M (30 feet); Connects to your mobile device using wireless technology or through the 35mm audio cable (not provided); Also play MP3 files though a USB flash drive or TF card; Instructions included; CE and FCC approved; Product Size: 2.25" h x 2.375" dia.; 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.;