Rulefiss Q38 Wireless Earbuds Bluetooth 5.3 Sport Earhooks

Designed for active users, the Rulefiss Q38 blends stable wireless performance, long battery life, and a sweatproof build into a compact pair of in-ear headphones. They pair automatically after first connection, support AAC/SBC decoding, and use 13mm graphene drivers to extend frequency response for clearer mids and punchier highs. With multi-touch controls, IP7 protection, and a dual LED percentage display on the case, these earbuds are tailored for workouts, commuting, and all-day listening.

How reliable is the wireless connection during workouts?

The Q38 uses Bluetooth 5.3 with a high-sensitivity FPC antenna to keep a fast, stable link up to about 15 meters and reduce latency. It supports common Bluetooth profiles for calls and media, and automatically reconnects when removed from the case.

• Bluetooth 5.3 chip for stronger signal and efficiency
• Auto-reconnect after first pairing
• Compatible with HSP, HFP, A2DP and AVRCP profiles
• Stable performance within ~15 m (50 ft)

What audio quality and call performance can I expect?

Equipped with 13mm graphene moving-coil drivers and AAC/SBC decoding, the Q38 extends the frequency bandwidth for more detailed instruments, fuller mids, and clearer high frequencies. Calls are improved by dual microphones and CVC 8.0 noise processing to preserve voice clarity in noisy settings.

• 13mm drivers for wide dynamic range (20Hz–20kHz)
• AAC/SBC audio decoding for better fidelity on supported devices
• Two built-in mics plus CVC 8.0 for clearer voice pickup
• Balanced sound suited to music and podcasts

How long does the battery last and how does charging work?

Each earbud runs roughly 6–8 hours per charge under normal listening; the included 800 mAh charging case extends total playback up to about 48 hours. The case shows remaining power in exact percentage using a dual LED display and supports fast Type‑C charging that replenishes the case in around 1.5 hours.

• Single-charge earbud playback: ~6–8 hours
• Charging case capacity: 800 mAh for up to 48 hours total
• LED percentage display (1%–100%) on case for accurate battery status
• USB-C quick charge — case charges in ~1.5 hours

Are these earbuds comfortable and durable for exercise?

The Q38 sports a 45° soft silicone earhook and ultra-light 7 g earbud weight to help keep them secure during movement without adding pressure. IP7 waterproofing protects against sweat and rain; multiple silicone tip sizes are included for a custom fit.

• Soft, flexible 45° earhooks for stable fit during activity
• Lightweight single earbud weight: 7 g
• Three ear tip sizes (S/M/L) included for seal and comfort
• IP7-rated protection from sweat and light water exposure

Who is this for: The Rulefiss Q38 is aimed at sports enthusiasts, commuters, and anyone who wants a secure, long‑lasting pair of true wireless earbuds with clear calls and reliable Bluetooth performance. Choose this model if you need a comfortable earhook design, extended battery reserve displayed on a compact case, and waterproofing for active use.