Feature:1. BLUETOOTH 5.0: Retro speaker uses upgraded Bluetooth 5.0 connectivity for faster transmission, lower power consumption, and better anti interference capability.2. STEREO: Retro bluetooth speaker has 360 degree stereo sound effect, surround HiFi sound quality, up to 6 hours of battery life.3. HIFI: Bluetooth speaker has HiFi grade sound speaker with HiFi chip, excellent use, simple connection, free play.4. PLAY MODES: Vintage bluetooth speaker has Bluetooth connection, U disk, small memory card and sound output multiple play modes.5. SMALL AND CONVENIENT: Vintage speaker has a delicate and compact appearance, light weight, does not occupy too much space, easy to carry.Specification:Item Type: Retro Bluetooth SpeakerMaterial: Plastic, ElectronicsBluetooth Version: BT5.0Transmission Frequency: 60MHz to 120MHzBluetooth Reception Distance: Straight Line Without Obstacles Greater Than or Equal to 10m/10.9ydSpeaker: 40mm/1.6in 4 Ohm 3WCharging Voltage: DC5V 300400mACharging Time: 23HOperating Hours: Volume Maximum Greater Than or Equal to 3H, Volume Minimum Greater Than or Equal to 6HFunction: Bluetooth Connection, U Disk, Small Memory Card, Sound OutputBattery Type: Built in 400mAh Lithium Battery.Package List:1 x Vintage Speaker1 x Sound Cable1 x Charging Cable