HILDCROA BX31 Sports Wireless Earbuds

HILDCROA BX31 sports wireless earbuds are in-ear Bluetooth headphones with ear hooks, touch controls and a charging case. The listing claims up to 75 hours of total playtime with the case, while single-charge playtime is stated as over 8 hours.

At a glance

Ear hooks and three tip sizes are presented as fit options for sports and workouts.
Listing claims more than 8 hours of playtime per charge and 75 hours in total with the case.
LED display is described as showing the earbuds' and case's battery levels.
Touch controls are claimed for playback, calls, volume and track changes.

Price

$20.98Save 92%

Reference price: ~~$249.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

Ear hooks and multiple tip sizes offer ways to adjust fit for exercise.
The charging case's stated total runtime is substantially longer than the claimed single-charge runtime.
The listing specifies Type-C charging and a battery display.

Cons

The listed noise control is None, so the earbuds are not specified as providing active noise cancellation.
The claimed 75-hour total depends on the charging case. Earbud-only playtime is stated as over 8 hours per charge.

Technical specifications

19 specifications

Identity
Brand	HILDCROA
Model	BX31

Connectivity and controls
Wireless connection listed	Bluetooth
Bluetooth version	5.3
Bluetooth range	10 meters

Design
Form factor	In Ear
Earpiece shape	Hook
Color	Smoky black
Driver type	Dynamic Driver
Driver size	13mm

Audio and calls
Microphone feature	ENC noise reduction

Power and charging
Playtime per charge	over 8 hours
Total playtime with case	75 hours
Full charging time	1.5 hours
Charging interface	Type-C
Battery display	LED digital display

Materials and protection
Water resistance listed	Waterproof
Protection claim	IP7 nano-coating

Warranty
Warranty description	90 Days Manufacturer

What to know before buying

The listing gives a 75-hour case-inclusive runtime and over 8 hours per charge, but does not state test conditions for either figure. It also uses both "None" for noise control and an ENC noise-reduction claim for calls. The protection is described as both "Waterproof" and an IP7 nano-coating, without further rating detail. Treat these as listing claims, not independently verified performance.

What’s in the box

Included

Cable
Eartip
User manual
Wireless charging case (1)
Wireless earbuds (2)

Who is it for?

A good fit for

Runners and gym users looking for in-ear earbuds with hooks and selectable tip sizes.
Listeners who want touch controls and a case with a displayed battery level.

Less suited to

Buyers seeking specified active noise cancellation or a clearly detailed water-resistance rating.
Anyone who needs a documented runtime under particular volume or connection conditions.

HILDCROA BX31 Sports Wireless Earbuds · photo 2 — Additional product photo 2

Customer reviews on Amazon

5 / 5 · 59 ratings

5 stars97%97%
4 stars3%3%
3 stars0%0%
2 stars0%0%
1 star0%0%

Aggregate ratings are strongly positive, with most ratings in the five-star category and a small share in the four-star category. No written customer feedback is supplied, so these figures do not establish particular strengths, concerns or how the earbuds perform for running or daily listening.

Frequently asked questions

How long do the HILDCROA BX31 earbuds play?

The listing claims over 8 hours on a single charge and 75 hours total with the charging case. It does not specify the conditions for these figures.

Do these earbuds have active noise cancellation?

The technical details list noise control as None. The feature copy separately mentions ENC for microphone noise reduction during calls, which is not the same claim as active listening noise cancellation.

Are the BX31 earbuds suitable for workouts?

They have an in-ear hook design and the listing describes them for sports use. It also claims waterproofing and an IP7 nano-coating, but gives limited detail about the protection rating.

What controls and charging connection are listed?

The listing describes touch controls for playback, calls, volume and track changes, plus a Type-C charging interface and an LED battery display.