Hi,my dear angel, welcome to Jacenvly, our products are cheap and good quality, price is fair, you can't miss it. If this product is not your style, please click on our store, we have many kinds of products, there will be you like and suits you. If you have any questions about your purchase, please send us the first message, we offer world class customer service to make your purchase without your worries. Have a nice day. New Watch Bluetooth Speaker Outdoor Portable Display Hands-free Call FM Radio Function Supports Playback Caixa Som Features: Music + stopwatch, activate your unlimited sports potential. Listen to news and information with you. The B90 has its own FM radio function, which allows you to easily enjoy the news and wonderful music brought by the radio during sports. Ultra long battery life, no need to worry about insufficient power, high-density polymer battery, standby time up to 48 hours, talk time up to 6 hours. Intelligent loss function, there is no need to worry about the loss of the mobile phone. Turn on the loss function of the mobile phone. If the mobile phone leaves the effective range of Bluetooth, the B90 will prompt a beep alarm. It is suitable for sports, walking and morning exercise, cycling and hiking. It is a good gift for relatives and friends. Product Description: Product specification: 1. Output power: 3wthd: 10% 2. Sensitivity ratio: 360mv 3. Signal to noise ratio: 80 dB 4. Input power supply: DC5V / 500mA . Frequency: 120hz-20khz 6. Bluetooth version: Bluetooth 3.0 + EDR Package includes: 1X smart watch speaker B90 1xusb charging cable 1X instruction Features: Music + stopwatch, activate your unlimited sports potential. Listen to news and information with you. The B90 has its own FM radio function, which allows you to easily enjoy the news and wonderful music brought by the radio during sports. Ultra long battery life, no need to worry about insufficient power, high-density polymer battery, standby time up to 48 hours, talk time up to 6 hours. Intelligent loss function, there is no need to worry about the loss of the mobile phone. Turn on the loss function of the mobile phone. If the mobile phone leaves the effective range of Bluetooth, the B90 will prompt a beep alarm.