Product Features True Wireless Bluetooth™ Earbuds with NRC - Noise Reduction and charging case 10mm Ultra Premium Drivers for an immersive audio experience Bluetooth™ 5.0 WT Chipset with up to 18 hours of total play/talk time Multiple sized earbud tips for an individual customized fit 400 mAh charging case – case will charge earbuds 3 times before a recharge is needed – buds charge within 1 hour Includes wireless earbuds, charging case, XACTknit leash strap Magnetic pulls snap earbuds into charging case effortlessly Built-in microphones on both buds for Bluetooth calling with background noise reduction Noise Reduction Coefficient (NRC) With certified Noise Reduction Coefficient (NRC) features, these headphones will block the unwanted noise out so you can zone in. Portable Charging Case TW Headphones come snuggly tucked in a portable magnetic charging case and is packaged in a microfiber carrying sleeve. Material Each TW earpiece is externally lined in our custom jacquard woven XACTknit material.