These Wireless Earbuds were engineered on the Bluetooth® 5.2 platform, allowing them to communicate as Bluetooth Low Energy devices, providing longer battery life for the listener and a stronger signal for better stability. The wireless headphones are constructed with custom tuned Neodymium Drivers to provide hours of listening enjoyment, with balanced immersive sound. Spire Wireless Earbuds are built to last for up to four hours of use on a single charge. The Charging Case provides an additional 300 mAh of charging power to allow for a total usage time of up to 20 hours. Earpiece Type: Earbuds; Earpiece Material: ABS Plastic; Silicone Ear Tips; Microphone: Yes; Headset Features: 20-Hour Playtime; Bluetooth; Magnetic Charging Case; Rechargeable; Touch Controls; Wireless.