A common example of wireless speaker is bluetooth speakers. They are connected wirelessly to other devices by Bluetooth technology. Operating any Bluetooth speakers does not require any expertise; tablets and smartphones can be connected to Bluetooth speakers in less than a minute. Bluetooth speakers range from ultra-portable pocket models to more powerful home speakers which offer better sound quality. Bluetooth speakers are ideal for outdoor activities such as beach parties and picnics due to its many models equipped with rechargeable batteries. Other Bluetooth speakers have better waterproof enhancements as well as could connect multiple speakers for stereo output and built-in microphones for hands-free calls.