16 w Bluetooth speaker, the sound is too load , good speaker in this price range, sound is good , it has inbuilt mic u can attend calls while the speaker is connected with phone.....1800 mah big battery, backup is good ...it has sd card slot and pendrive slot for playing songs, it comes with micro usb port which supports fast charging..... over-all speaker is good in this price range 🤝 grab it guys 😉