Turn up your next branded promotional or advertising campaign with this cellphone speaker amplifier that works without an internet connection, device, or even electricity! Just place your smartphone into the slot of this 4.75″ x 2.25″ device, and the unique design will amplify your phone’s speaker. Provide music for the whole party! This accessory is handcrafted from eco-friendly Chinese Gugar wood, so no two units are exactly alike. Brown only. Add your school, sports team, organizational or company logo, emblem or message to create a fun and functional desk accessory that people will really use.