AKZ MAX15 Wireless Bluetooth Headphones with Colour changing LED

-Bluetooth Version: 5.1
-Type: Wireless Headset
-SD Slot
-Battery: 400mAh
-Speaker: 40mm
-Charging Time: 2.5 hours
-Charging Voltage: DC 5V
-Connector: Type-C Charging port
-Frequency Response: 20Hz-20KHz
-Transmission Range: 10 meters
-Function: Power On-Off, Volume Control, Pause-Play, Switch songs, FM Radio, SD Slot, Voice Prompting
-Earmuffs: Soft
-Built in 3.5 Stereo Jack input
-LED: 7 color Gradient Effect