Come and Check Our Branding Solutions.This square wireless mini speaker is made of high-quality ABS, with shockproof, waterproof, and dustproof design, a 33-foot wireless range. The rubber outer surface can play an impact resistant effect. Its pocket size let it tucks easily into a large pocket for hands-free convenience. It can be easily attached to backpacks and travel bags by carabiner. It can play 12 hours of audio on a full charge. It is compatible with most wireless-enabled devices. Pls check inventory and detailed info before placing your orders.