Discharge modelHit the big Diamond: remaining show of the drumsOne light: Remaining battery on 25%Two light: Remaining battery on 50%Three light: Remaining battery on 75%Four light: Remaining battery on 100%The light goes off itself after several seconds Load modelHe glitter when charging, and he show how much power he has chargedThe first light glitter: Remaining battery <25%The second light glitter: Remaining battery <50%The third light glitter: Remaining battery <75%The fourth light glitter: Remaining battery <100%Four light up: fully charged