Feature: Plug and Play No settings are required: pairing is convenient and time-saving Delicate and compact, integrated buttons 4 hour Long endurance Description: Frequency response range: 50-1800HZ Speaker power supply: 3.7V 300MAH Charging voltage: DC5V 250MA Output power: 3W Output impedance: 40HM Signal-to-noise ratio: 80DB +N Less than 0.3% Speaker size: 14 inches Different batches may have different appearance, which does not affect use. color: Transparent Blue material: plastic Package Contents: 1 x player 1 x charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.