Rulefiss Q38 Wireless Earbuds Bluetooth 5.4 Sport IPX7

Rulefiss Q38 are cordless sport earbuds with Bluetooth 5.4, 60 hours total playtime, ENC mics and an IPX7-rated sweatproof earhook design for workouts and daily use.

The Rulefiss Q38 Wireless Earbuds are engineered for active listeners who want dependable sound, long battery life and a secure fit. Combining a 14.2mm composite diaphragm for wide-range Hi‑Fi audio with AAC/SBC decoding and ENC voice processing, these buds aim to deliver detailed music and clearer calls. The compact 800mAh charging case supplies extended runtime while a fast Type‑C recharge keeps you moving between sessions.

How do these earbuds perform for music and calls?

The Q38 focuses on balanced audio and clearer call quality rather than exaggerated bass. A large driver reproduces frequencies from low to high, while four built-in microphones and ENC (environmental noise cancellation) preserve voice clarity on calls.

• 14.2mm composite diaphragm for 18Hz–25kHz frequency coverage
• AAC/SBC decoding for better fidelity on compatible devices
• Four microphones with ENC reducing background noise for clearer calls
• 3D bass and layered instruments for a fuller listening experience

Will they stay put and survive sweat or rain?

Yes—the Q38 earbud design centers on an ultra-light 45° earhook and three ear tip sizes so the earbuds remain secure during movement. IP‑X7 water resistance shields the electronics from sweat and light downpours, making them suitable for running, gym sessions and outdoor workouts.

• Soft, flexible 45° earhooks for a snug, anti-slip fit
• Three silicone ear tip sizes (S/M/L) for customized sealing and comfort
• Single earbud weight ~8g keeps pressure off the ear for long wear
• IP‑X7 protection against sweat and rain exposure

How long does the battery last and how quickly does it recharge?

The Q38 offers industry-friendly uptime: each earbud provides several hours on one charge, and the included 800mAh case increases total playtime up to about 60 hours. The case features a percentage LED display so you can monitor remaining power, and Type‑C fast charging replenishes the case quickly.

• 6–8 hours per single earbud charge depending on use
• Up to 60 total hours with the 800mAh charging case
• LED dual power display shows case and earbud percentages (1%–100%)
• Quick Type‑C charging: case fully charges in about 1.5 hours

Are they easy to use and compatible with my devices?

Q38 earbuds use Bluetooth 5.4 with dual‑channel transmission for faster, more stable connections and low latency suitable for video and casual gaming. A touch panel on each earbud handles playback, volume, calls and voice assistant activation so hands-free control is straightforward.

• Bluetooth 5.4 improves stability and reduces interference; ~41ms low latency
• Automatic reconnection after first pairing with supported devices
• Touch controls for play/pause, volume, calls, and activating voice assistants
• Works with iOS, Android, TV, PC, tablets and most Bluetooth devices (not gaming consoles)

Who is this for? The Rulefiss Q38 suits active listeners who need reliable sound, long battery life and a secure, sweat-resistant fit—runners, gym-goers, commuters and anyone who prefers compact earbuds with a visible battery readout. If you want earbuds that balance audio quality, call clarity and endurance without complex setup, the Q38 is designed to meet those needs.