Product Details:
Function: Mp3 Music Player, Hands-free Calls, FM Radio, Phone Anti-lost, TF Card Support, Self-timer
Output power: 3W
Sensitivity: 360mV
SNR ( Signal to Noise Ratio ): 80dB
Charging Voltage: DC-5V 500mA
Frequency Response: 120Hz-20KHz
This multi-functional smart watch speaker is perfect for outdoor sports. You only need to wear it on your wrist, and enjoy your sports life more freely and breezily.
Package includes: B20 watch + charging cable + manual

• PORTABLE AND FASHIONABLE DESIGN: The unique watch design is more safe and convenient to wear, meanwhile making you more fashionable and outstanding. MUSIC PLAYER AND RADIO: Enjoy loud and clear music either by connecting it to your phone, or inserting micro SD card, or just openning your local FM radio.
• MOIBLE PHONE LOST ALARM: With a smart sensor inside, you will be alarmed when your cell phone is out of the bluetooth range.
• SUPER LONG BATTERY LIFE: High density polymer battery, 48-hour stand-by time and 6-hour use time.
• HANDS-FREE CALLS AND SELF-TIMER: Great for making or answering calls when driving or doing sports. It's also not bad to have a rest and take a selfie with this gadget.
• PROVIDE MULTI-COLORS: white, blue, gold, red, black,

PORTABLE AND FASHIONABLE DESIGN: The unique watch design is more safe and convenient to wear, meanwhile making you more fashionable and outstanding. MUSIC PLAYER AND RADIO: Enjoy loud and clear music either by connecting it to your phone, or inserting micro SD card, or just openning your local FM radio.Daluo