Does it have a microphone buil in? May i use it to do conference call and speak to people?

The X21 portable bluetooth speaker has a built-in microphone. You can pick up phone call from speaker and talk from your speaker even your phone is few feet away. shane Xeneo Power customer care team

can the battery be replaced?

The battery of Xeneo X21 Portable Bluetooth Speaker can not be replaced, because it's a sealed-in battery, you can not remove the battery from the speaker by yourself. If the batter is unable to hold acharge, the entire speaker must be returned to Xeneo for a new battery. If you have problem with your battery, please contact us for help, we could help you solve the battery issue for you. From Xeneo Power Customer Support

Does the sd card come with it when ordering the speaker?

hello, Xeneo X21 Portable Wireless Bluetooth Speaker comes with a SD card slot so you could insert sd card, is supports max32g SD card, and play music in your card without connecting bluetooth , but it doesn't come with a sd card per se.

When turning one speaker on or off do the other speaker automatically turns on and off at the same time or do i have to separately turn both on or off

When you pair up two Xeneo Portable Bluetooth Speakers for true wirelss stereo, the second speaker will automatically turn off when the master one turns off. To start playing music, you need to turn each of them on separately, and then they will automatically pair up.

ASIN	B07L3DG7MT
Additional Features	Built In Microphone, Outdoor Portable Bluetooth Speaker, Stereo Pairing, Waterproof IPX6, fm radio
Age Range Description	Adult
Antenna Location	Volume
Audio Driver Type	Dynamic Driver
Audio Output Mode	Stereo
Battery Average Life	10 Hours
Battery Charge Time	4 Hours
Best Sellers Rank	#100,381 in Electronics ( See Top 100 in Electronics ) #2,096 in Portable Bluetooth Speakers
Bluetooth Range	4.2 Meters
Brand	XENEO
Built-In Media	Travel Case
Color	Black
Compatible Devices	Smartphone, Tablet, MP3 Player, Laptop
Connectivity Protocol	Bluetooth
Connectivity Technology	Auxiliary , Bluetooth
Control Method	Remote
Controller Type	Battery Powered
Customer Reviews	4.2 out of 5 stars 617 Reviews
Enclosure Material	Plastic
Input Voltage	5 Volts
Is Waterproof	TRUE
Item Dimensions D x W x H	2.8"D x 7.2"W x 2.8"H
Item Height	2.8 inches
Item Weight	0.93 Pounds
Manufacturer	XENEO
Maximum Range	200 Feet
Model Name	X21
Model Number	x21-p2
Mounting Type	Freestanding
Number of Audio Channels	4.2
Number of Batteries	2 Lithium Ion batteries required. (included)
Number of Items	2
Number of Power Levels	1
Power Source	Battery Powered
Speaker Maximum Output Power	30 Watts
Speaker Size	2.8 Inches
Speaker Type	Subwoofer
Specific Uses For Product	Versatile
Subwoofer Connectivity Technology	Wireless
Subwoofer Diameter	7.2 Inches
UPC	726146018005
Unit Count	2 Count
Warranty Description	1 year warranty
Warranty Type	Limited
Water Resistance Level	Waterproof
Wireless Technology	Bluetooth

X21 Dual Portable Bluethooth Speakers Waterproof Outdoor Wireless Stereo Pairing with TWS FM Radio Micro SD Card IPX6 30W for Home Office Party and Travel (Pack 2 Black)

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