Wireless Earplugs (A7), Bluetooth 5.3 Earplugs Stereo Bass, In-Ear Built-In Microphone, Play 6 Hours, Talk 4.5 Hours, Comprehensive 40 Hours, Standby 320 Hours, Headphones With Soft Cushion Settings, Comfortable Wearing. The Charging Box Is Small And Mini, And The Lanyard Is Sent.