How do you hook it up to a laptop?

If your laptop has Bluetooth you connected that way. If not you use the RCA cord that's included that has a headphone jack. Plug it into the headphone jack of your laptop.

Can it be used at 220V as well as 110V voltage?

Rockville website says input 110v. https://www.rockvilleaudio.com/rhb70/?gclid=CjwKCAjwkYDbBRB6EiwAR0T_-lEYVmpz-aeYBCy2-v19wOedo0Lz7M5BnNKtcAI0AlC_Omw3r09HlBoCa8MQAvD_BwE

Can you connect a microphone to this

Yes you can use a mic with any system. There is literally an adapter for everything. Clearly this unit comes with a regular headphone/phone/tablet audio wire with RCA on the other end...Which mean all you need is a small adapter that takes whatever mic plug and has a 3.5 (regular audio like average headphones or phone) out. So if that sounds confusing it really is not. Figure out what your mic is, if it is the kind that most use, which will plug into an amp, then it will be very easy to find the right adapter, and likely it will cost 15$ or less. We have one here that you could use...Anything that you can plug your mic into that has a 3.5 output will work, even if it is not an adapter. We also have such devices here. REMEMBER, there is an adapter for all things audio and video....you can even buy a adapter that allows you to use your PC to record multiple channels that prevents the cable box from passing along the encryption that prevents recording live TV. Always an adapter for all things. ALWAYS! hope this helps.

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Rockville RHB70 Home Theater Compact Powered Speaker System, Bluetooth/USB/SD/FM, 4" Subwoofer, 2.1 Channel, 100W Peak, Cherry Wood Finish, for Home Entertainment

Product ID: 46257272

Details

Audio Output Mode
Stereo Sound
Brand
Rockville
Connectivity Technology
Bluetooth RCA
Frequency Response
20 KHz
Speaker Maximum Output Power
50 Watts

🌳Elegant cherry wood finish

📡32.8 ft Bluetooth range

🔊100W peak power output

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KD 39.55

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Description

🎶 Elevate your space with sound that speaks volumes—compact power, timeless style!

PERFECT FOR SMALL SPACES - Optimized sound for apartments, bedrooms, or offices—powerful yet neighbor-friendly bass.
IMMERSIVE 2 1 CHANNEL AUDIO - Feel every beat with a 4" subwoofer and dual 3" speakers delivering crisp highs and rich lows.
EFFORTLESS CONTROL ANYWHERE - Adjust volume, switch inputs, and manage tracks easily with a digital front panel or included remote.
COMPACT ELEGANCE MEETS FUNCTION - Stylish cherry wood enclosure with LED display fits perfectly on desks or shelves without clutter.
SEAMLESS MULTI SOURCE CONNECTIVITY - Stream wirelessly via Bluetooth or plug in USB, SD card, RCA, and AUX for ultimate playback flexibility.

The Rockville RHB70 is a compact 2.1 channel powered speaker system featuring a 4" subwoofer and dual 3" speakers, delivering up to 100W peak power. Its versatile connectivity options include Bluetooth, USB, SD card, RCA, and AUX inputs, all housed in a sleek cherry wood finish with an LED display. Designed for small spaces, it offers rich, clear audio with easy remote and digital controls, making it ideal for home entertainment, gaming, and music streaming.

Specifications

ASIN	B0752CTWCX
Additional Features	Hi Res Audio, USB Port
Age Range Description	Adult
Antenna Location	Music,Home Theater
Audio Driver Type	Dynamic Driver
Audio Output Mode	Stereo, Surround Sound
Battery Charge Time	40 Hours
Best Sellers Rank	#20,279 in Electronics ( See Top 100 in Electronics ) #10 in Home Theater Systems
Bluetooth Range	32.8 Feet
Brand	Rockville
Built-In Media	User Manual, Speaker, 3.5MM to dual RCA cable, Remote Control (Battery included)
Color	Cherry Wood
Compatible Devices	Laptop, Personal Computer, Phones, Tablet, Television
Connectivity Protocol	Bluetooth, USB
Connectivity Technology	Bluetooth, RCA, USB
Control Method	Remote
Controller Type	Hand Control
Customer Reviews	4.2 4.2 out of 5 stars (2,006)
Enclosure Material	Wood
Frequency Response	20 KHz
Global Trade Identification Number	00819216020050
Impedance	8 Ohms
Input Voltage	110 Volts
Is Waterproof	False
Item Dimensions D x W x H	11.62"D x 6.62"W x 12.41"H
Item Type Name	bookshelf-home-speakers
Item Weight	5.4 Pounds
MP3 player	No
Manufacturer	Audiosavings
Maximum Range	35 Feet
Model Name	RHB70
Model Number	RHB70
Mounting Type	Tabletop Mount
Number of Audio Channels	2.1
Number of Items	223
Power Source	Battery Powered
Speaker Maximum Output Power	50 Watts
Speaker Size	4 Inches
Speaker Type	Powered Speaker
Specific Uses For Product	Home Entertainment
Subwoofer Connectivity Technology	Wired
Subwoofer Diameter	4 Inches
UPC	819216020050
Unit Count	1.0 Count
Warranty Description	1 Year
Warranty Type	Limited
Water Resistance Level	Not Water Resistant
Wireless Technology	Bluetooth
Woofer Diameter	10.16 Centimeters

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