The Wavell 4 Sleep Pro is the successor to the previous Wavell sleep headphones, specifically designed for comfortable overnight use. These headphones feature ultra-thin, flat speaker drivers embedded in a soft, breathable headband with a circumference of approximately 60 cm and adjustable sizing. The speakers deliver clear sound while maintaining a minimal profile to avoid discomfort when sleeping on your side. Constructed from hypoallergenic materials, including moisture-wicking fabric and flexible memory foam padding, the headband ensures consistent comfort during extended wear. Bluetooth 5.0 connectivity provides stable wireless operation with a range of up to 10 meters, while the built-in microphone enables hands-free functionality. The rechargeable lithium-ion battery offers up to 10 hours of continuous playback on a single charge, with a full recharge completed within 2 hours using the included USB-C cable. Weighing only 85 grams, the lightweight design minimizes pressure points and allows for natural movements during sleep. The headphones are compatible with all Bluetooth-enabled devices, including smartphones, tablets, and computers, and support standard audio codecs for versatile connectivity. The washable headband design makes maintenance easy, with removable speaker modules that can be detached before cleaning. Available in multiple color options to suit personal preferences, the 4 Sleep Pro combines audio functionality with sleep comfort in a single integrated solution.