Can I set this to silent, while still having the shaker function on? I don't want to disturb my neighbors, but need the shaker option. Thanks!

Yes! Use the shaker and flashing lights. The lights wake me up just before the shaker goes off. I'm so hard of hearing ( the reason I bought this ) that I don't hear the alarm, but everybody in the house does.

Will the shaker work effectively with a SleepNumber or other similar air mattress?

I bought this for my 16 year old son who sleeps 'like the dead'. I had SO much trouble getting him up for school and/or work. He actually doesn't put the 'shaker' part under his pillow or mattress....he lets it dangle down the nightstand. It causes suck a ruckus clanking and rattling against the night stand I can hear it from the other end of the house! It has worked for him 100%. He's up every morning, without fail. And he had a summer job that started at 7am......he wasn't late even once!

does it have two alarms?

Sadly, the one disappointment in this clock is that although there are two alarm options, they both have to be set to the same MODE. (To select the wake up mode, slide the “Alarm Mode Switch“ to your desired position: a) “BUZZ“ for sound b) “VIB“ for bed shaker c) “VIB/ BUZZ“ for both sound and bed shaker NOTE: once the wake up mode is chosen, this will apply to both alarms.) We feel that being able to have the vibrating as an initial wake up and a loud buzz as the second, would be very useful, but not possible on this model.

Is the vibrating disc connected to the clock unit? Assuming wired...but hoping wireless...

It is not wireless. Has thin wire so could be easily taped out of sight. It is pretty long too .

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⏰ Wake Up Loud, Live Proud – Never Miss a Moment!

VIBRATING ALERT - Powerful bed shaker adds a tactile wake-up call for heavy sleepers and hearing-impaired users.
UNMATCHED LOUDNESS - 113dB alarm ensures you never oversleep again, even in the deepest slumber.
SLEEK COMPACT DESIGN - Modern black round shape fits effortlessly on any bedside table or workspace.
BATTERY POWERED FREEDOM - No cords, no hassle—runs on a single 9V battery for ultimate portability and reliability.
SILENT ENVIRONMENT FRIENDLY - Designed to keep your sleeping or working space quiet until alarm time hits.

The Sonic Bomb SBB500SS Loud Plus Vibrating Alarm Clock delivers an ultra-powerful 113dB alarm combined with a vibrating bed shaker, perfect for heavy sleepers and those needing a reliable wake-up call. Its compact, sleek black design fits seamlessly into bedrooms or living rooms, powered by a single 9V battery for cordless convenience. Engineered to maintain a silent environment until alarm time, it’s the ultimate bedside companion for professionals who demand punctuality without compromise.

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¥41890

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Brand	Sonic Alert
Colour	black
Display Type	Digital
Style	Casual
Special Feature	Alarm
Product Dimensions	20.5W x 15.4H Centimeters
Power Source	Battery Powered
Room Type	Bedroom, Living Room
Shape	Round
Theme	Abstract
Are Batteries Included	No
Mounting Type	Tabletop
Item Weight	680 g
Number of Batteries	1 9V batteries required.
Alarm Clock	No
Number of Items	1
Operation Mode	Electrical
Size	1 Count (Pack of 1)
Manufacturer	Sonic Bomb
Item model number	SBB500SS
ASIN	B000OOWZUK

Sonic Bomb Sbb500Ss Loud Plus Vibrating Alarm Clock

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