dodocool Hi-Resolution Rechargeable Stereo Wireless Speaker with Built-in Microphone

Features
High-Resolution Audio Certified
Comply with High-Resolution Audio standards. Deliver a true sound reproduction of HD video and High-Resolution Audio tracks with far higher quality than MP3s and even CDs. Let you enjoy every breath, drumbeat and note of music just like the artist intended.
Support Multiple Audio Source
Designed with a TF card slot, USB disk slot, 3.5mm Aux input port and BT functions, this speaker supports multiple audio sources. Get audio from your TF cards, USB disks, music players or BT-enabled devices easily.
Easy to Use
Easily pair with 33ft long-range and stable wireless connection and automatically connect to the last-connected device. Multiple function buttons let you enjoy music, handle hands-free calling, or adjust volume easily.
Long Playtime
Enjoy up to 7-hour playing time and 30-day standby time with the built-in rechargeable 2000mAh lithium battery. Fully recharge in just 4 hours using the included Micro-USB cable. You can even play music and charge simultaneously.
Hands-free Function
Built-in microphone for hands-free calling function enables users to answer an incoming call without delay. The music will stop automatically if there is an incoming call.
Wide Compatibility
Compatible with most BT-enabled smartphones, tablets, personal computers or other devices.
Note: TF cards or USB disks are not included.