Page 2 - Physical Look - Hardware
The 1MORE Fit Open Earbuds S70 are the flagship of the Fit Open Earbuds series, where we have previously reviewed the Fit Open Earbuds S50 and Fit SE Open Earbuds S30. There are two color variants for the 1MORE Fit Open Earbuds S70, which are black and white. Although I have the black variant, I noticed that the earbuds and case are gray under most lighting conditions. In dim lighting, they tend more towards the black side. The two ends of the earbuds are made out of a metallic material, and the part that bends over the ears is made out of silicone. The metallic part hides fingerprints quite well, but the silicone part is more prone to it, especially when the fingers are wet. Each earbud is 8.9g and measures to be about 4.6cm in length, 4.3cm in width, and 1.1cm in height.
For touch commands, the S70 supports double tap, triple tap, and hold. By default, both earbuds have the same commands. Double-tapping the earbud plays and pauses audio, triple-taping is disabled, and holding for 3 seconds activates the phone's voice assistant. When receiving a call, double-tapping answers it, while holding declines it. During a call, double tapping ends it. After some testing, I noticed if the earbuds are tapped lightly, there is a good chance it will not be registered. The manual shows the touch zone being a rectangle extending a little outwards from the 1MORE logo on each earbud, but for mine, it started where the "O" is. There is also about half a second of latency before the commands are executed. Right before execution, the earbuds will always beep, which I found to be unnecessary and distracting.
The S70 utilizes Bluetooth 5.3 and supports AAC and SBC audio codecs only. By default, Bluetooth uses Subband Coding, or SBC, to encode audio. Its relative simplicity reduces the processing power required. The bitrate for SBC can go up to 328kbps. AAC, or Advanced Audio Codec, is a more complex algorithm that encodes audio with better quality despite being at a lower maximum bitrate of 250kbps. It is the preferred codec for Apple devices. There is no support for higher quality codecs like aptX or LDAC.
Despite the earbuds not having the option to twist and adjust the ear hooks, the S70 fits very nicely on the ears. There is a metal rod made out of memory titanium alloy inside the silicone part that allows the hook to have a significant amount of bend to wrap around the ears. The structure of the earbuds also causes the speaker part to bend in towards the ears to reduce the air gap. I wear glasses, but the earbuds sit comfortably next to the frame without me having to make any adjustments to them. The 1MORE Fit Open Earbuds S70 also feels light, and overall has a very comfortable fit. On the manufacturer's website, they highlighted they "spent a decade using advanced technology to create products that fit more comfortably and securely", and I would say the work has paid off for the most part.
The audio driver type of the S70 is not stated anywhere, but from the pictures on the manufacturer's website, they seem to be dynamic drivers. The diaphragm of the driver, which vibrates and produces sound waves, is made out of a diamond-like carbon, or DLC in short. On the 1MORE website, they state this material "enables fast sound conduction, leading to extended high frequencies, enhanced transparency, and greater detail in the sound reproduction". Whether this translates to real-world performance is something to assess on the next page, but the advantage of DLC is it is both lightweight and rigid. Rigidity is important, because it reduces distortion by allowing the diaphragm to produce sound quickly, return to the rest position, and then be ready to produce the next sound. The weight affects the amount of power required to move the diaphragm. The limitation is rigidity usually comes at the cost of heavier weight. The ability of DLC to overcome this limitation is what leads to the benefits stated by the manufacturer.
On the inner side of the earbuds that point towards the ears, there is a grille for the speaker and two metal contact points for charging. The microphone is located on one of the side faces of the earbuds. Each microphone is a four-mic array with AI-powered enhanced noise reduction technology.
I measured the S70 case to be about 7.5cm in length, 6cm in width, and 2.5cm in height. The case alone weighs 58g, but increases to 75.8g with the earbuds inside. Personally, I am fine with the size, but I can see this being too bulky for others. I am unsure what material the case is made of, because it has a metallic texture, but upon tapping it, it sounds like plastic. The overall structure is quite sturdy. The lid is held shut by a magnet and it can withstand me intentionally trying to shake it open. On the lid, there is a tinted window to see the earbuds and the battery indicator LED. The LED is located in between the two earbuds. When the lid is opened, it will flash a color to indicate the battery level of the earbuds. The same will happen when the earbuds are placed back into the case. When the lid is closed, the same LED will indicate the battery level of the case instead. For all scenarios, green means above 80%, yellow means 20% to 80%, and red means below 20%. The earbuds are charged through the case, while the case is charged through USB Type-C. A 575mAh battery is used for the case, and a 60mAh battery is inside each earbud.
When the lid of the case is opened, the earbuds will automatically connect to the previously connected device. By default, only one device can be connected at a time. However, in the app under Experimental Features in Settings, there is the option to turn on dual-device connection. When two devices are connected, the earbuds will automatically switch depending on which one is playing audio. There is a 1 to 2 second delay when switching between devices. If both are playing at the same time, then whichever one played the audio first will continue. To reset all Bluetooth connections, there is a button below the battery indicator LED near the bottom of the case that can be held for 8 seconds. The LED will flash red when it resets. The touch controls will also reset with this process.
The 1MORE app is available on Android and Apple on their respective app stores. On the top of the main page, the app displays the battery of both the case and earbuds. There are five pages that can be navigated to. In Custom Settings, the touch command functions can be changed. In Sound Options, there is an EQ with six presets, but there is no choice for custom tuning. The Shortcuts page only has one setting option for turning on gaming mode, which is just a low-latency mode. The Quick Guide to the Product page contains exactly what the name suggests. The Settings page has multiple sub-pages. One of the pages allows the firmware to be upgraded. Another one is the Experimental Features page, which has the option to turn on dual-device connection as aforementioned.
Page Index
1. Introduction, Packaging, Specifications
2. Physical Look - Hardware
3. Subjective Audio Analysis
4. Conclusion
