1. Not Easy To Fall Off: The Stereo External Amplifier is attached to the headphone through a 3.5mm headphone plug and buckle position, making it difficult to fall off 2. Replace The Original Headphones: The helmet external amplifier can replace the original headphones to reduce the tedious process of entering and removing the ears during use. 3. Easy to Use: The mini speaker is easy to use, ready to install and use. You just need to press the power button to use it. 4. Low Power Range: Helmet Stereo loudspeakers have a charging time of about 1.5 hours and a usage time of about 4 hours, providing uninterrupted entertainment, and aesthetically pleasing, without any burden. Type: Wireless Adapter Compatible Model: for PS VR2 Model Number: Stereo External Amplifier Applicable host: for PS VR2 Battery life: approximately 4 hours Charging time: approximately 1.5 hours Battery capacity: 300mAh Product weight: 110g Colour:White Material:plastic Package Contents: 1 * Stereo External Amplifier 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.