1More S70 Review: Open Ear Active Earbuds

Who Should Buy It

Key Specifications

Overview

The 1More S70 is a budget open ear true wireless earbud aimed at listeners who want to stay aware of their surroundings. The product listing emphasizes a lightweight titanium and liquid silicone construction, with each earbud weighing 8.7 grams. It also highlights a 40 hour total battery figure and an IPX5 water resistance rating. This design places the driver outside the ear canal, which is different from isolating in ear monitors.

On paper, the S70 tries to solve common open ear weaknesses through digital signal processing and a custom diaphragm. The listing names dual magnetic drivers and DiamondFlex diaphragms, tuned by Grammy winning engineer Luca Bignardi. It also promises clear calls with four AI ENC microphones. The price tier is budget, but the feature set reads more like a lower mid range product. The listing does not detail included accessories beyond the earbuds themselves.

Sound Quality

Open ear earbuds generally trade deep bass and passive isolation for comfort and environmental awareness. The S70 listing claims that an advanced DSP algorithm enhances bass in real time, which aims to counter the natural bass rolloff of an unsealed fit. The dual magnetic drivers and DiamondFlex diaphragms are described as improving both bass and clarity. Buyers should still expect less sub bass energy than a sealed in ear model, because low frequencies require a sealed chamber to fully develop.

The master tuning by Luca Bignardi is a notable marketing point, but the listing does not provide a frequency response graph or codec details. On paper, the sound should be clear and present, with a focus on vocal intelligibility for calls and podcasts. Without in-person data, the exact tonal balance remains unverified. The open fit will also let in ambient noise, which can mask quiet musical details, so listeners in loud spaces may need to raise the volume.

Comfort and Fit

Comfort is a core selling point for the S70. The listing states that each earbud weighs 8.7 grams and uses aerospace grade titanium and soft skin friendly liquid silicone. These materials are common in open ear designs because they can provide a secure over ear hook without heavy pressure. The open design means nothing is inserted into the ear canal, which can reduce the fatigue some people feel after long listening sessions.

The listing says the fit works for any ear shape, but that is a strong claim without adjustable hooks or multiple tip sizes. It does not mention whether the ear loops can be bent or if different sizes are provided. Buyers report that open ear earbuds can shift during intense movement, although the IPX5 rating suggests the S70 is meant for workouts. The lack of a published case weight or size also leaves portability open to interpretation.

Noise Control and Features

The S70 does not advertise active noise cancelling for playback. That is expected for an open ear design, because the ear canal remains unblocked. The listing instead uses four AI ENC microphones for call noise reduction, which is a different feature that focuses on making your voice clearer to the person on the other end. It does not promise to block surrounding noise from your own listening experience.

The feature set includes Bluetooth multipoint, app control, IPX5 water resistance, and a quick charge function. Multipoint lets you connect to two devices at once, which is useful for moving between a phone and laptop. The app likely provides EQ or control customization, though the listing does not detail the exact options. Overall, the S70 positions itself as a practical tool for active and office use rather than a quiet listening bubble.

• Bluetooth multipoint for two devices
• IPX5 sweat and splash resistance
• App control with customizable settings
• Four AI ENC microphones for call clarity
• 5 minute quick charge for 2 hours of playback
• 40 hour total battery with charging case implied

Battery, Bluetooth and Connectivity

The headline battery figure is up to 40 hours of playtime. The listing does not separate the earbud only runtime from the case contribution, which is common for true wireless products. A 5 minute quick charge is said to deliver 2 hours of playback, which is convenient for a quick top up before a workout. There is no mention of wireless charging or USB type, so buyers should not assume those features.

Bluetooth multipoint is a meaningful connectivity feature at this price. It allows seamless switching between two paired devices, such as a laptop for video calls and a phone for music. The listing does not publish the Bluetooth version or supported audio codecs, so high resolution codec support remains unknown. Latency and connection stability are also not specified, though buyers typically expect standard true wireless performance.

Build, Design and Portability

The S70 uses aerospace grade titanium for the ear hooks and liquid silicone for the contact surfaces. This combination is designed to be lightweight and durable while remaining comfortable for long sessions. The IPX5 rating means the earbuds can resist sweat and light splashes, but they are not fully waterproof and should not be submerged. The listing does not mention a case rating, so only the earbuds are covered.

At 8.7 grams per earbud, the S70 is light for an open ear design. The charging case dimensions and weight are not published, which makes it difficult to assess true pocketability. Open ear earbuds typically have a larger case than standard in ear buds because they must fit the curved ear hooks. Without published measurements, buyers will need to rely on photos or third party reviews for size expectations.

Call Quality and Daily Use

Call quality is a priority for the S70. The listing states that four AI ENC microphones work together to reduce background noise and keep your voice clear. This is useful for Zoom meetings or phone calls in moderately noisy rooms. The open ear design also lets you hear your own voice naturally, which can reduce the odd plugged feeling some people experience with sealed earbuds during calls.

Daily use scenarios include commuting, office work, and exercise. The IPX5 rating covers sweat, and the secure ear hooks are intended to stay put during movement. Multipoint connectivity supports a smooth transition from a laptop call to a phone playlist. However, because there is no active noise cancelling, loud environments may still overwhelm quiet audio. Buyers who need silence should look at sealed or over ear designs instead.

Who Should Buy It

The S70 is best for people who find in ear earbuds uncomfortable or who need to keep ambient sound present. Runners, cyclists, and gym goers can benefit from the open design and IPX5 rating. Office workers who move between two devices will appreciate multipoint and clear call microphones. The budget price also makes it an attractive first pair of open ear earbuds.

Buyers who want deep bass, strong isolation, or active noise cancelling should not choose the S70. The open ear format is fundamentally about awareness and comfort, not bass impact. The listing does not publish exact driver size or codec support, so audiophiles looking for high resolution playback have no concrete specs to evaluate. However, for casual listeners and active users, the feature set is compelling on paper.

Alternatives Worth Considering

If you need active noise cancelling, over ear models like the Bose QuietComfort 45 provide a completely different experience with sealed earcups. They are larger and heavier, but they block much more external sound. For open ear specifically, the Shokz OpenFit is a similar concept with a flexible ear hook design. The Sony LinkBuds also offer an open style with a unique ring driver, though they sit in the ear opening rather than over the ear.

Anker Soundcore has open ear options at similar budget prices, often with similar battery and water resistance claims. Without published codec or driver specs for the S70, direct comparisons are limited. Buyers should prioritize fit and app experience over raw numbers. The S70's combination of titanium, silicone, multipoint, and 40 hour battery is competitive on paper, but the lack of published case dimensions and codec support leaves some questions.

Verdict

The 1More S70 is a budget open ear earbud that focuses on comfort, clear calls, and all day battery life. Its lightweight titanium and silicone construction, IPX5 rating, and multipoint Bluetooth make it a practical choice for active and office use. The listing's claims of DSP enhanced bass and master tuning are encouraging, but open ear acoustics inherently limit low end impact and isolation.

Without in-person testing or published codec and case specs, the S70 remains a promising but partially unverified product. The score reflects a solid value for the right user, but not a universal recommendation. Buyers who prioritize awareness and comfort over deep bass will likely be satisfied. Those who want true noise cancelling or audiophile detail should look elsewhere.

Strengths and Limitations

Alternatives to Consider

FiiO BTR13

Audiophiles who want a pocketable Bluetooth DAC/amp to drive wired headphones or earbuds with hi-res codecs and PEQ.

Read the FiiO BTR13 review →

Soundcore Anker Q30

Buyers who want affordable over-ear ANC headphones with long battery life and app customization.

Read the Soundcore Anker Q30 review →

1More Triple Driver Headphones

Listeners who want a budget wired in-ear headphone with a triple driver setup and a generous accessory package.

Read the 1More Triple Driver Headphones review →

Head-to-Head Comparisons

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Questions Buyers Ask