Wireless sport-style magnetic earbuds with microphone in PU + EVA round zipper case with charging cable. Magnet on each end of earbuds allows user to secure around neck. Black earbuds come in black case and white earbuds come in white case. Power/Technology: Rechargeable Lithium battery. Input: 5V/2.0A; Output: 5V/1.0A; Capacity: 55 mAh; Sensitivity: 42+-3DB; Frequency response: 2.4-2.485GHz; Transmission range: 10-15M (32-49 Ft). Playback time: approx. 2.5 hours. Device must be charged prior to first use. Charge time varies by device, minimum 1 hour. Includes USB to micro USB charging cable and instructions. FCC Approved. WARNING: Refer to the item manual for safety and warning instructions Shipping available to contiguous U.S. addresses and Canada via Ground only. Cannot ship via Air, ..