Velour Fabric, ABS & PC. Features High Definition Bluetooth® 5.1 Wireless Technology. Minimizes Distractions And Provides Soothing Sounds For Relaxation. 2 Small Speakers On Each Side Of The Band. Simply Pair With Your Device To Enjoy Dynamic Stereo Sound. Adjustable Hook & Loop Closure. One Size Fits Most. Push Buttons To Power On/Off And Adjust Settings. Timing Function. 10 Soothing Sounds To Choose From – Ocean Wave, Brook, Diving, Rainy Day, Sea Gull, Water Drop, Relaxing Music, White Noise, Fireside And Forest Bird. Features A Type-C Input (Cord Included). 180 mAh Lithium Battery. Charging Time Approximately 2 Hours. Up To 10 Hours Play Time. The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by Hit Promotional Products, Inc. is under license. Other trademarks and trade names are those of their respective owners.