Zoolase Retro Double Bell Alarm Clock vs Sonic Alert Sonic Boom SB1000 Alarm Clock

The Zoolase is a simple, sturdy twin-bell analog clock with a metal case and a genuinely loud ring; it suits heavy sleepers who want a classic bedside clock and nothing more. The Sonic Alert Sonic Boom SB1000 is the stronger pick for very deep sleepers or anyone with hearing loss: it adds a bed shaker, adjustable volume and tone, adjustable snooze and alarm duration, and a large digital display. The Zoolase wins on build feel and quiet operation; the Sonic Boom wins on wake-up power and adjustability. Owners of twin-bell clocks like the Zoolase praise the loud ring but note the bells are either on or off, while Sonic Boom owners value the shaker and the tuning options.

• Choose the Zoolase if you want a quiet, cordless retro clock with a loud bell and a metal body, and you do not need a shaker or volume control.
• Choose the Sonic Boom if you are a very deep sleeper or hard of hearing and want a bed shaker, adjustable volume and tone, and a large digital display.