Speaker features: 1, excellent quality, metal body, with independent intellectual property rights and brand. 2, it has better sound quality and bass function. 3, the battery is durable, fast charging time. 4, strong compatibility, compatible with all types of mobile phones, tablet PCs, desktop computers. 5, Bluetooth connection is quick and the connection distance is far. 6, easy to carry, stylish appearance. Notice 1,Audio A103 will shut down automatically without any operates in 5 minutes. 2,Audio A103should turm into bluetooth pairing mode seach and pair with previous devices automatically. 3,Next/Prev.button is not available under Aux-in mode. 4,do not use the speaker with water around it. 5,Please clean the speaker only use dry towels. 6,Do not put the speaker close to open-flames such as lighted candles. 7,It is a duty to protect the environment while you are considering drop the speaker ,especially the battery inside. 8,The speaker could only use in mild climate conditions,speaker does not contain any component which could be fixed by users.