JQ-D082BT(With Bluetooth) Shell Size: About 68x23mm; Board Depth: About 32mm Function Introduction: Support Bluetooth Function (Bluetooth Version 5.0)/Dual Decoding Of Mp3, Wma, Wav, Ape Lossless Format Music/Read Usb Disk/Read Tf Card/Radiate Fm/External Audio Source Input Line In (Aux)/Infrared Remote Control/ Power Off Memory Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:As Shown Material:Metal+Plastic Package Contents: 4 x Decoder 4 x Remote Control (Requires 1 CR2025 Battery, Not Shipped) 12 Sets x Power Cord Sets 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.