Barrel shape Bamboo Music amplifier for your table ? Just place phone, and instantly enjoy enhanced sound ? Made from Eco-friendly, 100% natural bamboo ? Each speaker is unique and different as it is made from unprocessed material ? Double pen holder for your pens ? Hole cut side caps for better sound quality ? Handmade sound amplifier works through passive sound amplification ? No bluetooth or power source needed ? Comes in PU gloss finish for high durability Note: Since it is made of natural bamboo, product is subject to minor variations in size