Rulefiss BX27 Bluetooth 5.4 Earbuds 75Hrs
Product description
These Rulefiss BX27 sport earbuds combine long battery life and secure fit for workouts and daily use. They promise up to 75 hours of total playtime according to the manufacturer, making them a practical choice when you need extended listening without frequent charging. The soft silica gel earhooks and three sizes of silicone tips aim to keep the buds stable during running or gym sessions, while a single earbud weighs just 4.3g for minimal on-ear bulk. If you prioritise long runtime, these earbuds deliver, if you prefer a compact true wireless that charges frequently, you may look elsewhere.
Key points
The design focuses on movement and comfort, with non-slip details on the earhooks that help the buds stay put during strenuous exercise. Bluetooth 5.4 is included for faster pairing and improved connection stability compared with earlier versions, and auto-reconnect kicks in when you remove the earbuds from the case. Sound is handled by a 14.2mm dynamic driver and AAC/SBC decoding, which aim to produce a lively stereo stage for music while training. For calls, four microphones and CVC 8.0 noise reduction are described as improving vocal clarity, which helps when taking calls outdoors or in busy gyms. There is an IP7 nano‑coating for resistance to sweat and rain, though the manufacturer advises wiping metal parts after heavy workouts to avoid corrosion.
Tech specs
- Name: Rulefiss BX27 Wireless Earbuds Sport
- Bluetooth: 5.4
- Battery life: 75Hrs total playtime
- Weight: 4.3g per earbud
- Waterproof: IP7
How to use it
For runners and gym users the earbuds aim to stay comfortable and secure, with earhooks that wrap around the ear and three tip sizes to tune the seal. Touch controls handle calls and playback, which keeps interaction simple when you are on the move. If you value longer play between charges and clear voice pickup for calls, these earbuds cover both areas, but bear in mind that heavy perspiration should be followed by drying the metal contacts to maintain longevity.