2025 Gold EarFun Air Pro 4 Wireless Earphones Bluetooth Adaptive Hybrid Chip Compatible with aptX Resolution LDAC Hours of Continuous Playback

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. 🏅 [Advanced Technology Solution & aptX Lossless Audio Transmission] EarFun Air Pro 4 uses Qualcomm's cutting-edge chip "QCC3091". Compatible with the latest Bluetooth standard (V5.4) and the latest audio solution "Snapdragon Sound" to achieve high sound quality and low latency. Compatible with "aptX Lossless", you can enjoy high-quality wireless music playback of up to 96kHz/24bit (approximately 1.1 to 1.2Mbps) in a stable wireless communication environment. It also supports LDAC, transmitting an overwhelming amount of information approximately three times as much as a CD (44.1kHz/16bit) at a bit rate of up to 990kbps, preserving the details of the music and allowing you to hear the true original sound. 🏅 [Advanced Noise Cancelling/Intelligent Wear Detection Function] The unique noise canceling technology has evolved to "QuietSmart 3.0". New Adaptive Noise Cancellation technology that changes the noise reduction level depending on the surrounding noise level provides up to 50dB of noise reduction. Also equipped with intelligent wear detection, music will automatically pause when you remove the earbuds and resume playback as soon as you put them back on. 🏅 [6 microphones + AI technology for high-quality calls / low-latency game mode] Compatible with "cVc 8.0", which removes noise from collected voices by using high-performance microphones installed on each side of 3 on the left and right. Even in noisy environments, your voice can be easily heard by the other party. By turning on the game mode in the "EarFun Audio" app, you can reduce the wireless audio delay to up to 50ms (0.05 seconds), and you will no longer have to worry about the sound and video being out of sync. 🏅【Long Playtime Up to 52 Hours/IPX5 Waterproof Performance】Based on the extremely low power consumption of Qualcomm's latest S3 3rd generation high performance QCC3091 Bluetooth chip, Air Pro 4 can be used for up to 11 hours on a full charge and up to 52 hours with the charging box included. It supports two charging methods: wireless charging and USB-C charging. It also supports quick charging and can be used for 2 hours with 10 minutes of charging. The earphones have IPX5 waterproof performance, so you can safely handle sudden exposure to water or sweating during exercise. Please note: The charging box is not waterproof, so please keep the charging box dry. 🏅【Supports New Technologies LE Audio and Auracast】Supports the new generation Bluetooth standard LE Audio and AURACAST wireless sharing listening technology, opening new ways to connect with the world. With AURACAST Broadcast, you can join as if searching for a Wi-Fi network, connect your device and receive broadcasts (such as boarding broadcasts and standby broadcasts), so you don't have to worry about missing a broadcast. *LE Audio and AURACAST will be available after firmware update. 🏅 [Multi-point connection and Google Fast Pair compatible] Compatible with the latest Bluetooth 5.4, making the connection faster and more stable. In addition to the multi-point function that allows you to connect two devices at the same time, it also supports Google Fast Pair, which allows you to quickly and comfortably pair with your Android device. Note: ① If one earphone does not light up and cannot be connected, please reset it. Please contact customer service to determine the correct reset procedure. ②Our firmware will continue to be upgraded. Since many firmware updates are performed initially, there is a small chance that updates that span multiple versions will fail. If it fails, please reset the earphones and try updating again and again. ③To use the aptX Lossless and LDAC codecs, you need a device that supports those codecs. You will also need to install the EarFun Audio app on your Android smartphone and use that app to enable LDAC (aptX Lossless is enabled by default). LDAC and aptX Lossless are not available on iOS systems such as iPhone and iPad. ④Due to technical limitations, LDAC is prone to signal blockages, so please use the device and earphones within a 1 meter range and remove obstacles. You can also change the LDAC bit rate to 330kbps in your device's developer options. If the blockage is still severe, try using another codec such as aptX. GOOD