Rulefiss BX27 wireless sports earbuds with Bluetooth 5.4

Bluetooth: Rulefiss BX27 wireless sports earbuds combine an in-ear shape with touch controls and a wireless connection. The listing highlights flexible earhooks, an app with 48 EQ presets and up to 75 hours of total playback, while customer feedback is positive about fit and sound but mixed on reliability.

At a glance

The listing describes over-ear silicone hooks intended to help keep the in-ear buds secure during exercise.
The Zemyee Life app is claimed to offer 48 EQ presets and custom sound profiles.
Battery claims are up to 15 hours per charge and up to 75 hours with the charging case. A dual LED display shows case and earbud charging status.
Touch controls are listed for music and calls, with Bluetooth 5.4 wireless connectivity.

Price

£21.99Save 83%

Reference price: ~~£129.99~~

Price checked: 14 Nov 2026

View offer Ahead of Black FridayExplore the selection

Pros and cons

Pros

Over-ear hooks and multiple listed ear-tip sizes offer options for a more secure exercise fit.
The app's claimed EQ presets and custom profiles let listeners adjust sound to preference.
A charging case with a dual LED display is claimed to show battery and charging status.
Customer feedback reports positive experiences with sound, fit, battery life and ease of connection.

Cons

Playback time depends on use and volume, so the claimed maximum should not be treated as a guaranteed everyday result.
Feedback reports mixed reliability, with some customers saying the earbuds stopped working.

Technical specifications

19 specifications

Identity
Brand	Rulefiss
Model	BX27
Colour	Black-A
Age range	Adult

Connectivity and controls
Wireless connection listed	Wireless
Wireless technology	Bluetooth
Bluetooth version	5.4
Bluetooth range	33 Feet
Control methods listed	Touch
Headphone jack	No Jack
Charging interface	USB Type C

Fit and audio
Form factor	In Ear
Ear placement	Over Ear
Earpiece shape	Hook
Driver type	Dynamic Driver
Driver size	14.2 Millimetres

Materials and protection
Water resistance listed	Water Resistant

Other listed details
Compatible devices	Android/iOS Smartphones, Laptops, Tablets
Country of origin	China

What to know before buying

Listing details to confirm

The listing describes the ear placement as “Over Ear” while also giving the form factor as “In Ear”. It also differs on included ear-tip sizes: the explicit box list says two pairs in L/S, while the feature copy says three sizes S/M/L. Battery claims vary between up to 15 hours per charge with five to six case charges and about 14 hours plus five full case top-ups. The displayed water-resistance detail says “Water Resistant”, while promotional copy claims IP7. Confirm the version and included tips in the selected listing, and treat these performance and protection statements as manufacturer claims.

What’s in the box

Included

BX27 wireless sports earbuds × 2
Portable charging case × 1
Soft silicone ear caps × 2 pairs (L/S)
Type-C charging cable × 1
User manual

Who is it for?

A good fit for

Runners and gym users who want hooked earbuds and touch controls.
Listeners who want to adjust sound through app EQ presets and custom profiles.
Buyers seeking a charging case with a battery-status display.

Less suited to

Anyone who needs confirmed long-term reliability, as feedback on reliability is mixed.
Buyers who require a clearly specified water-protection rating or verified battery runtime.

Rulefiss BX27 wireless sports earbuds with Bluetooth 5.4 · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 13,852 ratings

5 stars68%68%
4 stars16%16%
3 stars8%8%
2 stars2%2%
1 star6%6%

Customer feedback highlights sound quality, secure fit during activities, long-lasting battery and easy Bluetooth connection, which may suit exercise and everyday listening. Some customers also praise noise cancellation and ease of setup. Reliability feedback is mixed, with some reporting that the earbuds work well and others saying they stop working. These are customer impressions and do not confirm the listing's battery or protection claims.

Positive themes

Customers report good sound quality and a secure fit during running and other activities.
Feedback praises battery life, ease of setup and Bluetooth connection.

Mixed feedback

Reliability feedback is mixed, including reports that some earbuds stopped working.
Some customers appreciate noise cancellation, but these reports do not establish a specific level of noise reduction.

Frequently asked questions

How long does the battery last?

The listing claims up to 15 hours of continuous use per charge and up to 75 hours total with the charging case. Another listing statement gives about 14 hours per charge and around 70–75 hours total at standard volume, so actual runtime may vary.

Do these earbuds have an app equaliser?

The listing says the Zemyee Life app provides 48 EQ presets and allows users to create and save custom profiles.

Are the BX27 suitable for running?

They have flexible sports earhooks, and customer feedback describes a secure fit during activities such as running. Fit can vary by ear, and the listing's ear-tip size details are inconsistent.

What is included?

The explicit contents list names two BX27 earbuds, one charging case, two pairs of silicone ear caps in L/S, one Type-C charging cable and a user manual. Feature copy instead mentions three tip sizes, so confirm the selected listing's included sizes.