Features:

[Marvel Elements] Five Marvel element designs, unique and noble
[Wireless playback] Support paired wireless devices to play music on mobile phones, tablets, TVs, etc.
[Hands-free call] Support hands-free call function, built-in high-sensitivity microphone, the call can be enjoyed smoothly.
【MP3 playback】Play TF card MP3 files directly.
【Radio】Digital stereo radio, automatic search and memory radio, saving time and effort.
[Audio input] Stereo audio input port, convenient to connect to various audio sources such as computers, digital music players, mobile phones and other audio-visual products.
[Rechargeable lithium battery] Built-in rechargeable lithium battery, environmentally friendly, economical and practical.
[Smart charging] When the battery is low, the voice prompts please charge, and the power is automatically cut off when the battery is fully charged to avoid damage to the battery due to excessive charging.

Brand: Unbranded
Transmission range: 20 meters
Function: call function, voice control, support music
Bluetooth protocol: 5.0
Channel: stereo
How to use: head-mounted
Whether single or double ear: Bilateral stereo
Applicable gift-giving occasions: trade fairs, advertising promotions
Color: Iron Man, Spiderman, Black Panther, Hulk, Captain America