Comparing 2 robot vacuums
Your shortlist side by side: today’s price, our score and every fact the maker states.
Green is the best of these 2, also when they share the lead.
Drag a model by its header to move its column, or use the arrows.
Nothing Ear (a) × Best on 1 fact | Sony WF-C510 × Best on 2 facts | |
|---|---|---|
| Most important facts | ||
| The lowest price today at a shop that delivers to you, delivery included. A price with an asterisk comes from a shop abroad, and its delivery cost is our own estimate. Lowest price | 59 €Saturn | 34 €Saturn best |
| Our own score out of 10: 60% the maker’s facts and 40% shop ratings. Price does not count. Score | best | |
| The average of the stars buyers give at the shops, with the number of reviews behind it. We only compare it from 20 reviews. Customer rating | ★ 4.5 · 60 reviews best | ★ 4.2 · 46 reviews |
| How the headphones cancel outside noise with microphones. Hybrid uses microphones outside and inside the cup, adaptive also adjusts to the sound around you. When it matters
When it matters less
Source
| Adaptive | None (assumed) |
| How long the headphones or the earbuds play on one charge with noise cancelling on, as the maker states it. When it matters
When it matters less
Source
| 5.5 h | – |
| What the headphones or one earbud weigh. Lighter is more comfortable for hours at a time. In this comparison
When it matters
When it matters less
Source
| 4.6 g | 4.6 g |
| The Bluetooth version. A newer one connects more steadily and uses less power, if the phone has it too. In this comparison
Source
| 5.3 | 5.3 |
| How well they resist water and dust, as the IP code states. IPX4 survives sweat and rain, IPX7 a short dip in water. When it matters
When it matters less
Source
| IP54 | IPX4 |
| How the sound is packed for Bluetooth. AAC suits iPhones, aptX and LDAC carry more detail from Android phones that support them. When it matters
When it matters less
Source
| SBC, AAC, LDAC | SBC, AAC |
| Connected to two devices at once, such as a phone and a laptop, and switching by itself to the one that plays. When it matters
When it matters less
Source
| yes | yes |
| Rank | ||
| Where the model stands in our ranking, among the headphones of the same type. Rank | rank 44 of 51 with an in-ear fit | rank 35 of 51 with an in-ear fit |
| Battery | ||
| How long they play on one charge with noise cancelling off. In this comparison
Source
| 9.5 h | 11 h |
| How long the earbuds play in total with the charges stored in their case. Source
| 42.5 h | – |
| How many minutes of charging give the playback below. In this comparison
Source
| 10 min | 5 min |
| How many hours of playback a short fast charge gives. In this comparison
Source
| 10 h | 1 h |
| The case or the headphones charge on a Qi pad, without a cable. Source
| no (assumed) | no (assumed) |
| The plug the headphones or their case charge through. Source
| USB-C | USB-C |
| How long a full charge takes. Source
| – | 90 min |
| Build and fit | ||
| How the headphones sit: over the ear, on the ear, in the ear canal, in the outer ear, beside the ear or on the cheekbone. Source
| In-ear | In-ear |
| Two separate earbuds with no wire between them, charged in a case. Source
| yes | yes |
| They play over Bluetooth, without a cable to the phone. Source
| yes | yes |
| The plug for a cable, so you can also listen wired, for instance on a plane or with a battery that has run out. Source
| None | None |
| They play sound over a USB-C cable, straight from a phone or a laptop. Source
| no (assumed) | no (assumed) |
| The kind of speaker inside. Dynamic drivers are the most common. Planar and electrostatic ones are mostly found in expensive headphones for home listening. Source
| Dynamic | – |
| The diameter of the speaker inside. A bigger driver does not by itself mean better sound. Source
| 11 mm | – |
| What the charging case weighs, without the earbuds. In this comparison
Source
| 39.6 g | 31 g |
| How you play, pause and change the volume on the headphones themselves. Source
| Squeeze the stem | – |
| Whether the app lets you choose what each button, tap or swipe does. With some controls, only part of them can be changed. When it matters
When it matters less
Source
| Some controls | Some controls |
| How many microphones the maker counts, for calls and noise cancelling together. Source
| 6 | – |
| Warranty and support | ||
| The month the model came out, as far as the maker or a register shows. Source
| 2024-04-18 | – |
| Sound | ||
| Certified by the Japan Audio Society for high-resolution sound, wired or, with Hi-Res Audio Wireless, over Bluetooth. Source
| Hi-Res Audio | – |
| You can adjust bass and treble in the maker’s app. Source
| yes | yes |
| Sound that seems to come from around you rather than from inside your head. Source
| no (assumed) | yes |
| Noise cancelling | ||
| How much say you have over noise cancelling: only on or off, a few set levels, a slider, or left to the headphones alone. When it matters
When it matters less
Source
| Set levels | – |
| Lets outside sound through on purpose, so you hear traffic or a colleague without taking them off. Source
| yes | yes |
| Can work as a hearing aid for mild to moderate hearing loss, where the maker has it approved. Source
| no (assumed) | no (assumed) |
| Wireless | ||
| The newer Bluetooth standard for sound, with the LC3 codec: better sound on less power, with phones that support it. Source
| no (assumed) | no (assumed) |
| Can listen to a Bluetooth broadcast, such as a TV, an airport announcement or a friend sharing music. Source
| no (assumed) | no (assumed) |
| Pairs in one tap with an Android phone. Source
| yes | – |
| Whose phones the headphones are made for. Some features, such as one-tap pairing or spatial audio, work only with that maker’s phones. Source
| Any phone | Any phone |
| How many devices they stay connected to at once. Source
| – | 2 |
| How far from the phone the maker says the connection holds, without walls in between. Source
| – | 10 m |
| In use | ||
| The music pauses when you take them off and plays on when you put them back. Source
| yes | no (assumed) |
| The name of the maker’s app. Source
| Nothing X | Sony | Sound Connect |
Facts as the maker states them. A dash means the maker does not name it. Each model’s page gives the source of every fact. Noise is the maker’s own figure, so we do not judge it, and a customer rating only counts from 20 reviews.

