Geemarc Sonic Bomb

If you sleep through standard alarms or have hearing loss, you need an alarm that combines sound, strong vibration and visual cues to make oversleeping impossible — that’s the problem the Sonic Bomb addresses. It’s a bedside alarm aimed at heavy sleepers, people who are hard of hearing and anyone who needs a guaranteed wake-up. ## What makes it worth it The Sonic Bomb pairs an extra-loud 85 dB alarm with a supplied vibrating pad so you get two independent ways to wake up: noise and physical vibration, and it also offers a bright flashing light for a third cue. The clock lets you tune tone and volume, choose from multiple alarm modes (sound, shaker, flashing light, or any combination), and set snooze from 1–30 minutes and alarm duration up to 59 minutes; these options are simple but effective for tailoring the wake-up to how you sleep. A large red LED with five dimmer levels and a battery-backup (DC 9V power with battery reserve) means the clock stays readable at night and won’t fail you in a power cut. ## Where it falls short At a reported maximum of about 85 dB the Sonic Bomb is loud enough for most people but not the absolute loudest on the market (Geemarc’s own Wake'n'Shake Star and some Sonic Alert variants reach ~95 dB). The unit is mains-first and relatively chunky compared with minimalist travel alarms, so it’s not the best choice if you want something compact and portable. If you are a heavy sleeper or have hearing loss who wants a reliable, highly customisable bedside alarm that combines sound, vibration and flashing light, buy this; if you only need a subtle wake-up or a compact travel clock, look elsewhere.

£47.99