Main Features:● Bluetooth for audio and hands free function
● FM radio tuner with alarm clock USB and micro SD card playing functions
● 3.5mm line in and micro USB charging port
● Remarkable sound quality: Solid construction with subwoofer， coaxial 66mm subwoofer with 40mm tweeter， full range sound including enhanced bass
● Built-in rechargeable battery for over 3 days standby and up to 14 hours of playtime
● Built-in microphone for hands-free speaker phone calling
● Support telephone number reporting function， intelligent female voice announcement for connection and incoming call information
● LED display show time， alarm clock， FM radio， charging status， bluetooth status and so on
● USB stick and 3.5mm line in play
● Support MP3， WMA， WAV， APE and FLAC format
● Built-in rechargeable battery 3000mAh Brands: SARDiNE
Model: SDY - 021
Design: Cool，Multifunctional，Portable，Sport，Stylish
Compatible with: MP3，TF/Micro SD Card
Supports: Airplay，Bluetooth，FM，Hands-free Calls，Loudspeaker，Microphone，SD Card Music Playing，Volume Control
Functions: AUX Function，Songs Track，Stereo
Connection: Wireless
Interface: 3.5mm Audio，Power Charge Port，TF Card Slot，USB2.0
Audio Source: Bluetooth Enabled Devices，Electronic Products with 3.5mm Plug，SD card，TF/Micro SD Card
Color: Black，Blue，Red，White，Yellow
Speaker Impedance: 3 ohm Bluetooth version: V4.0
Protocol: A2DP
TF Card Extension: 32G to the Max.(Not Included)
Transmission Distance: W/O obstacles ≥10m
Number of Speakers: 2
Sound channel: Two-channel (stereo)
Power Output: 5W
ROM: 16GB
Standby time: 3 days
Freq: 60Hz-18KHz
S/N: 95dB Charging Voltage: 5V
Working Voltage: 3.3V- 4.2V
Battery Capacity: 3000mAh
Charging time: 5 hours
Lasting Time: 14 hours Battery Type: Lithium ion battery
Battery Voltage: 5V
Battery Current: 1A 1.034 Package weight: 1.064 kg
Product size (L x W x H): 20.00 x 20.00 x 4.00 cm / 7.87 x 7.87 x 1.57 inches
Package size (L x W x H): 22.50 x 22.50 x 7.50 cm / 8.86 x 8.86 x 2.95 inches Package Contents: 1 x Bluetooth Speaker， 1 X Audio Cable 1 x USB Cable， 1 x Bilingual User Manual in English and Chinese