If you want superior battery endurance, active noise cancellation, and a design specifically engineered for the smallest ear canals with liquid silicone comfort, choose Ttbesmi SM01; if you need zero-beep silence during sleep, ultra-lightweight ergonomics that weigh barely anything, and versatile use for running or travel beyond just bedtime, choose Rehoria Side Sleeper Earbuds.
• Ttbesmi SM01: The standout strength is its 42-hour total battery life combined with active noise cancellation and soft liquid silicone construction designed to prevent pressure points for side sleepers. Its trade-off is the reliance on touch controls which some users might find sensitive, and it lacks the specific "no beep" feature found in the competitor.
• Rehoria Side Sleeper Earbuds: The biggest advantage is the complete elimination of startup beeps to ensure uninterrupted rest, paired with an incredibly lightweight build (2.5 grams per bud) and a dynamic driver setup that works well for exercise as well as sleep. The trade-off is a shorter single-charge playtime compared to the Ttbesmi and a lack of active noise cancellation technology.
• Best for: The Ttbesmi SM01 is ideal for heavy sleepers who need maximum battery life and deep isolation from ambient noise, while the Rehoria buds are perfect for those who prioritize absolute silence during pairing and want a pair of earbuds they can wear for fishing or jogging without changing gear.
The Ttbesmi SM01 is built with a very specific philosophy: if you are a side sleeper with small ears, this device is engineered to disappear into your anatomy. This isn't just about comfort; it's about stability. Because these earbuds weigh only 0.12 ounces each, they are among the lightest options available, meaning you can wear them all day long without the fatigue that comes from heavier plastic buds. The material choice is critical here; the use of liquid silicone ensures a soft touch that avoids the swelling and discomfort often caused by traditional hard plastics, making it a viable option for anyone prone to ear irritation.
For the serious audio enthusiast who needs their playlist to last through multiple nights of listening without hunting for a charger, the battery specifications are compelling. With a single charge providing up to 5 hours of continuous playtime, you get enough juice for a full night's rest. But the real game-changer is the charging case, which extends the total usage time to 42 hours. This means you can go nearly a week on a single charge of the case itself. Furthermore, the inclusion of Bluetooth 5.4 offers a transmission distance of about 10 meters, ensuring a stable connection even if you leave your phone in the kitchen while drifting off in the bedroom. The Active Noise Cancellation feature adds another layer of utility, blocking out external disturbances to create a quieter environment for sleep.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-24 · 7 min read · Independent comparison
However, this product is not for everyone. If you are looking for a multipurpose earbud that doubles as a high-fidelity sports headset for intense workouts, the SM01's primary focus on sleep might make it less ideal for activities requiring robust sweat resistance or secure retention during high-impact movement. Additionally, while the touch controls are convenient, they require a specific level of interaction that some users might find finicky compared to physical buttons. You should also consider that the audio driver is described as a custom driver optimized for "whale cavity stereo surround sound," which suggests a tuning focused on immersive relaxation rather than the punchy bass response often sought in gym headphones. If your priority is purely sleeping and you have small ear canals, this is a strong contender, but if you need a rugged daily driver, you might look elsewhere.
The Rehoria Side Sleeper Earbuds take a different approach, focusing heavily on the psychological aspect of sleep: silence. A common annoyance with many wireless sleep buds is the loud beep or chime that plays when they power on or connect, jolting a light sleeper awake. Rehoria has explicitly addressed this by cancelling the beep entirely, ensuring that the transition into sleep mode is completely silent. This attention to detail makes them particularly suitable for people who are easily startled or who share a bed with a partner who might hear the notification sounds. The design is minimalist and invisible, using soft silicone earplugs that conform to the ear's natural shape. Weighing just 2.5 grams per bud, they offer a "barely-there" feel that allows you to change positions throughout the night without feeling the weight of the device pressing against your pillow.
Beyond the bedroom, these earbuds are surprisingly versatile. While marketed for sleep, the specifications indicate they are not limited to that single use case. They feature a 6mm diameter dynamic driver with a frequency range of 20Hz to 20kHz, delivering clear mids and bright treble. This makes them capable of handling music, podcasts, or audiobooks with good fidelity. More importantly, the description notes that they can be used for exercise, running, and traveling. The Bluetooth 5.3 connectivity provides a stable signal with low latency (5 milliseconds), which helps synchronize audio with video content or maintain a steady stream during movement. The case itself is compact, measuring roughly 4.7 centimeters on each side, making it easy to toss into a pocket or bag for a quick workout session.
Despite these strengths, there are limitations to keep in mind. The single-charge battery life is listed around 4 to 7 hours depending on volume and conditions, which is generally sufficient for a night's sleep but less than the 5-hour continuous run of the Ttbesmi when considering the total ecosystem. The case provides an additional 20 hours, bringing the total to a solid 24-27 hours, but it falls short of the Ttbesmi's 42-hour claim. Furthermore, the Rehoria buds rely on sound isolation rather than active noise cancellation. This means they block noise physically through the seal of the earplug but do not electronically cancel out ambient sounds like traffic or snoring. If you sleep in a very noisy environment, this passive isolation might not be enough to fully immerse you in your audio. Also, while they are great for general use, the lack of specialized features like the liquid silicone cushioning found in the SM01 might make them slightly less comfortable for those with extremely sensitive ear canals over long periods.
• Best for extended battery life → Ttbesmi SM01, offering 42 hours of total playtime with its charging case compared to Rehoria's roughly 27 hours.
• Best for silence during pairing → Rehoria Side Sleeper Earbuds, which eliminate the startup beep that can disturb light sleepers.
• Best for noise isolation → Ttbesmi SM01, thanks to its Active Noise Cancellation feature versus Rehoria's passive sound isolation.
• Best for small ear canals → Ttbesmi SM01, specifically designed with liquid silicone and a slim profile to prevent pressure on tiny ears.
• Best for versatility (fishing/running) → Rehoria Side Sleeper Earbuds, explicitly marketed for exercise and travel with a durable, lightweight form factor.
• Best for fast charging → Ttbesmi SM01, which supports Type-C fast charging allowing 90 minutes of listening from just 10 minutes of charge.
• Best for audio driver quality → Rehoria Side Sleeper Earbuds, featuring a 6mm dynamic driver with a wide frequency response for clearer sound reproduction.
• Best for contactless charging issues → Rehoria includes instructions for cleaning contacts with a needle tip, addressing a common failure point for small buds.
After weighing the specs and intended use cases, I would buy the Ttbesmi SM01 if my primary goal was a dedicated sleep companion that blocks out the world and lasts for days. However, for the specific use case of noise canceling sleep headphones for fishing, where you might be outdoors for long durations and need reliability, I recommend the Ttbesmi SM01. Its active noise cancellation is crucial for blocking wind and water noise, and the 42-hour battery life ensures you won't be tethered to a charger during a multi-day trip. The liquid silicone comfort is also a major plus when wearing them for extended periods under a hat or near a boat's engine. That said, if your fishing trips involve a lot of movement or you prefer a lighter feel that doesn't require electronic noise cancellation, the Rehoria buds remain a strong alternative for their seamless operation and lack of startup beeps.
Yes, both models work well, but the Ttbesmi SM01 is better for noisy environments due to active noise cancellation, while Rehoria offers a lightweight option for active movement.
No, the Rehoria Side Sleeper Earbuds specifically remove the beep interference, whereas the Ttbesmi SM01 does not mention this feature, so check the manual for default behaviors.
The Ttbesmi SM01 offers up to 5 hours, while the Rehoria buds provide between 4 to 7 hours depending on volume and environmental factors.
Yes, the Rehoria Side Sleeper Earbuds are explicitly designed for running and travel, while the Ttbesmi SM01 focuses primarily on sleep comfort and stability.
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