Sharp Big Bang Super Loud Alarm Clock Red/Black - Heavy Sleepers

Our review of the Sharp Big Bang Super Loud Alarm Clock finds it best suited for heavy sleepers and anyone who needs a reliably jarring wake-up. The single biggest reason to buy is the alarm itself: with up to 115db output and six distinct sounds you can adjust in both volume and tone, this clock is engineered to force alertness where softer alarms fail. It is straightforward to set, runs from household power with a battery backup for settings, and offers a pair of alarms plus a customizable snooze that make it practical for shared schedules.

Key Features

• Extra loud output: Up to 115db volume ensures the alarm reaches heavy sleepers and fills larger rooms without muffling.
• Six alarm sound choices: Rooster, Bugle, Nagging Mom, Jackhammer, Siren and Beep let you pick the tone that best rouses you.
• Adjustable volume and tone: Fine tune both loudness and pitch so the wake sound is effective but not overwhelming.
• Dual alarms with custom snooze: Two separate alarms and a snooze you can set from 1 to 59 minutes accommodate couples or varying schedules.
• Three-step dimmer: Off, Low, and High display brightness lets you reduce LED glare at night.
• Electric operation with backup: Plugs into 110V/120V outlets for normal use and uses 2 x AAA batteries to preserve settings during outages.

Who It's For

This clock is ideal for heavy sleepers, teenagers, or anyone who has trouble waking with standard bedroom alarms; the loudness and multiple sound options give real flexibility. It also suits shared rooms where two separate wake times are needed, since the dual alarm feature is easy to program.

People who want a feature-packed smart alarm, battery-only portability, or a silent bedroom aesthetic should look elsewhere, because the Sharp Big Bang prioritizes raw loudness and utility over subtle design or advanced connectivity.

Pros & Cons

Pros

• Extremely loud maximum volume up to 115db, effective for heavy sleepers.
• Multiple distinct alarm tones and tone adjustment for personalized wake-up sounds.
• Dual alarms with a customizable snooze time make it flexible for different schedules.
• Simple controls and a three-level dimmer for comfortable night display settings.

Cons

• Battery backup only preserves settings and does not power the lit display, so the display goes dark during outages.
• Some users report inconsistent long-term durability, so occasional reliability issues have been noted.

Specifications

Our Verdict

The Sharp Big Bang Super Loud Alarm Clock is a practical, no-nonsense solution for anyone who needs a dependable, very loud alarm. Its combination of six adjustable tones, up to 115db volume, dual alarms and customizable snooze offers excellent value for heavy sleepers and shared bedrooms, though those seeking smart features or full battery operation should consider alternatives.

Frequently Asked Questions

Does the clock run on batteries?
The clock is electric powered and plugs into 110V/120V; 2 x AAA batteries are used only to back up time and alarm settings during power loss.

Can I set two different alarm times?
Yes, the unit supports dual alarms that can be set independently, which is useful for couples or different weekday schedules.

Is the display dimmable at night?
Yes, the LED display has a three-step dimmer: Off, Low and High, so you can reduce glare while sleeping.