Amplify your sounds in a sustainable way, with this compact Bluetooth speaker, made predominantly from natural bamboo and recycled aluminium. 5.1 ( d ) x 6 ( h ) cm bamboo & recycled aluminium lithium polymer battery Bluetooth version 5.0 10 metre visible distance audio playback time: 3 – 4 hours audio recharge time: 2 hours battery capacity: 300mAh speaker power: 5W frequency: 20Hz 20KHz includes USB charging cable packaged in a natural kraft Okiyo gift box