Aluminum & ABS Plastic multifunction tech device is a wireless earbud charging station (earbud included) and power bank in one. Power/Technology: Earbud Battery – Rechargeable Lithium Polymer battery in each bud. Capacity: 40 mAh/3.7V; Power Bank Battery: Rechargeable Lithium Polymer: 2000 mAh; Input:5V/1A; Output: 5V/1A, 5V/60 mA; Microphones sensitivity: -40±2db; Frequency Response: 20Hz -20KHz; Transmit Range: 10m (30 ft); Wireless Version: 4.1; Wireless Profile: A2DP/HFP/HSP/AVRCP. Pair with smartphone to listen to music or make hands-free phone calls. Music/talk time: 3-4 hours. Item must be charged prior to first use. Charge time varies by device. Minimum 2 hours. 3 sizes of ear tips are included to select optimal fit for best audio performance. LED indicator light (available battery life). Includes USB charging cable and instructions. CE, RoHS and FCC Approved. UL Certified (UL File # MH60484). **This item can only ship to the contiguous United States and Canada via ground** WARNING: Choking Hazard – Small parts. Not for children under 3 years. WARNING: Refer to the item manual for safety and warning instructions.