Comfort & Secure Open-Ear Clip Design: Experience all-day comfort with our ergonomic anti-Z-shaped ear clip and ultra-lightweight build ( less than 5g per earbud). The nickel-titanium alloy frame adapts to any ear shape, ensuring a stable, pressure-free fit for workouts, runs, or commutes.

Hi-Res Audio & LDAC Certification: Immerse in studio-grade sound with 10.8mm dual-magnet drivers and Hi-Res Audio/LDAC dual certification, supporting 96kHz/24bit lossless music. The carbon fiber diaphragm delivers deep bass and crisp highs, while dynamic audio tuning (48,000x/sec) balances frequencies for 360° spatial sound in movies, games, or music

99.5% Leakage-Free Privacy & Clear Call: Directional Audio 3.0 and reverse soundwave cancellation reduce sound leakage by 99.5%. Wind-Blocking structure and Al powered microphone en-sures your voice comes through loud and clear.

Bluetooth 6.0 & Dual Connectivity: Crossky C30S true wireless earbuds adopt advanced Bluetooth 6.0 technology to ensure you get a stable and fast connection. Connecting to 2 devices simultaneously, allowing you to watch movies on TV while answering calls without switching.

40-Hour Playtime & Fast Charging: Enjoy 6h single-use and 40h total playtime with the 460mAh charging case. A 10-minute quick charge via USB-C delivers 1h playback—ideal for last-minute gym sessions or commutes.

IPX5 Waterproof: The earbuds withstand intense workouts, light rain, and daily splashes. Durable construction ensures reliability in harsh environments—your ideal companion for outdoor adventures and high-intensity training.

Stay Aware, Stay Connected

The ultra-light open ear design keeps you aware of your surroundings, so you’ll never miss those “Hey, look out!” moments.

Stable and Secure Fit

The clip-on design ensures a secure and comfortable fit, whether you’re running, cycling, or just on the go.

Asymmetrical 12° Design

Engineered for balance and pressure free wearing experience.

Flexible & Adaptive Comfort

Crafted with a Ni-Ti memory alloy and soft silicone finished, adapt to most ear shapes for a snug fit.

Rich and Detailed Sound

Powered by a 10.8mm dual-magnet high-sensitivity driver, these earbuds deliver crisp highs, full-bodied mids, and deep bass. With LDAC codec support, experience up to three times more detail than standard Bluetooth audio, bringing you richer, more authentic sound.

* LDAC is not supported on iOS devices.

Bass Enhance Algorithm

Our dynamic EQ algorithm improves the bass performance, and reduces high-frequency distortion, delivers balanced sound no matter how loud you turn it up.

Minimised Sound leakage

With advanced directional audio technology and auto sound beam adjustment, sounds are transmitted precisely into ear canal, making for a private listening⁠ experience.

360° Spatial Sound

Immerse yourself in theater-grade surround sound with QCY 360° spatial audio technology. Experience a wider, more dynamic soundstage that brings your music and movies to life.

Crystal Clear Call Quality

Wind-Blocking structure and AI powered microphone ensures your voice comes through loud and clear.

Faster & More Stable

Featuring the latest Bluetooth 6.0 chip, Crossky C30S delivers a faster, more stable connection.

With ultra-low 60ms latency—ensuring smooth, lag-free audio for both music and gaming.

40Hours Long-Lasting Listening

Set your Own QCY APP

Customize your own audio experience, adjust EQ settings, unlock more features to make your earbuds truly yours.

What’s in the Box:

Earbuds × 1 pair

Charging case × 1

User Manual × 1 set

Type-C charging cable × 1

Specifications:

Product Name: QCY Crossky C30S

Type: Open Ear

Color: Silver/Red/Black/White

Driver: φ10.8mm dual-magnet driver

Audio codec: LDAC/SBC

Call noise cancellation: Dual-mic ENC call

Bluetooth version: Bluetooth 6.0

Effective bluetooth range: 10m

Battery capacity: 32mAh(earbud), 460mAh(charging case)

Battery life: 6h(earbuds), 40h with charging case

Cable charge time: 2h

Charging port: USB Type-C

Weight: 5g (single earbud)

Dimension: 66.0*49.0*25.6mm (charging case), 29.0*26.0*15.7mm (earbud)

FAQ:

Q: What should I do if the headset received unable to turn on?

A: Confirm that the charging case has power left, press the button on the case and check if at least one LED is illuminated.

If charging case power off, please put the earphones in charge case and charging for 1 hour. Before charging, please Remove the stickers on new earphones.

Connect the case with your included USB cable and plug it into a USB power source.

Q: What should I do if Sound comes from only one earphone?

A: Put both earphones back into the charging case and close the cover,  then take them out again to check whether both ears have sound. If only one earphone still has sound, please restore the factory settings for both earphones.

Q: How to solve the problem that the mobile phone prompts that it cannot connect?

A: Delete the pairing record on the mobile phone, and then search for pairing and connect again.

Q: How to solve the problem that there is no sound when listening to music or calling?

A: There is a settings icon on the right side of the Bluetooth connection name on Android phones. Click to enter, turn off the mobile phone audio and media audio, and then turn them on again. If there is still no sound, please re-pair the earphones with the mobile phone.

Q: Why is there a delay in video or games?

A: Affected by factors such as the use environment, network and mobile phone Codec, there will be different degrees of delay when the mobile phone transmits audio data to the earphone.

Q: How to solve the problem of stuck or intermittent sound?

A: If there are a lot of Wi-Fi, 5G or 4G signals, high-power electrical appliances around, it may cause stuck and intermittent sound. Please Change the environment or re-pairing can solve the problem.

Other Tips:

1. Before using the earbuds, please read the manual carefully and keep it for future references.

2. The earbuds need to be fully charged prior to first-time use.

3. lf the earbuds are left unused for over two weeks, please recharge.

4. Please use the chargers made by qualified manufacturer.

5. lf earbuds fail to be found by phone, please re-turn them connectable or restore factory settings.

6. lf a program error of phone occurs, please turn off and on Bluetooth function or reboot the phone.