The Egg Shape Portable Digital Hand Warmer Rechargeable Purple has faddish and portable design， convenient to carry. Ideal for air travel， camping or cold office environments. No electromagnetic radiation， the high performance battery， can be used more than 500 times.                                    Features            New and high quality， never used<br>Faddish and portable design， convenient to carry<br>USB interface for charging<br>IR heat transmission， promote blood circulation， speed up metabolism<br>No electromagnetic radiation<br>High performance battery， can be used more than 500 times<br>Ceramics heating sheet， lower power consumption<br>High and low temperature two scales<br>Pls do not use it when is charging<br>                                                            Specifications            Color    5V， 1A    <br>Input voltage    0 ~ 40 td    Charging temp    -10 ~ 40 td    Working environment temp    approx 40 td    Low temp    approx 50 td    High temp    2.5 ~ 3.5 hours    <br>Charging time    ABS    <br>Material    3.35" x 2.44" x 0.79"    <br>Dimension    70 ~ 75g    <br>Weight    purple    <br>                                                            Package Includes            1 x Egg Shape Portable Digital Hand Warmer Rechargeable Purple<br>