Maximize your relaxation with the comfort of this form-fitting sleep mask that doubles as Bluetooth headphones. The two speakers fit right over your ears so you can listen to your favorite music or podcast via Bluetooth as you hunker down for some well-deserved rest. For particularly sleepless nights, listen to one of the preprogrammed white noise selections to drift off peacefully. DESIGN & FEATURES: Bluetooth wireless allows straightforward wireless pairing of bluetooth enabled devices Soft comfort fit suitable for extended use Adjustable headband with velcro closure for better fit and more comfort Slim earphones for comfortable side sleeping Light blocking design 10 Nature sounds Supports bluetooth v5.2 Handsfree speakerphone Built-in microphone Micro-USB port for battery recharge Voice prompts for guided operation Controls volume up/next, volume down/previous, play/pause/pairing/answer phone/power on/off Detachable electronics for easy cleaning SPECS: Wireless range: 49 feet keeps your devices connected even as you roam DC battery power: built-in rechargeable lithium ion battery Battery life: ~7 hours at 50% volume Battery life: ~5 hours at 100% volume Battery life using white noise: ~15 hours at 50% volume, ~10 hours at 100% volume Charge time: 2.5 hours