VALVE TYPE  Ceramic Disc

BOARD TYPE        Glass Dry Erase Board

This vacuum only weights 17

For use on carpet

Feature for feature it simply defies the competition

Ultimate Ears WONDERBOOM Portable Bluetooth Speaker System - Gray VALVE TYPE Ceramic DiscUltimate Ears WONDERBOOM Portable Bluetooth Speaker System Gray Technical Information Minimum Frequency Response: 80 Hz Maximum Frequency Response: 20 kHz Features: Water Proof Features: Micro USB Port Features: Bluetooth Pairing Features: Wireless Audio Stream Features: Wireless Pairing Features: Drop Proof Features: USB Charging Port Features: Built in Battery Features: Passive Radiator Features: Dust Proof Portable: Yes Audio Sound System: 360