Discounts available for bulk purchases. Brand: Intertech 2025 Latest Edition & Top-of-the-Line Model Bluetooth 5.3 Wireless Earphones (High-quality wireless earphones evolved from Bluetooth 5.1 to Bluetooth 5.3) Compatible with various devices with Bluetooth functionality. Compatible with iPhone/Samsung/iPad/Android/PC ★ Noise Canceling Function: Passive ★ Package Contents: Earphone unit, charging case, charging cable, instruction manual With box Easy operation with automatic pairing. The wireless earphones automatically enter pairing mode when taken out of the charging case, allowing for easy Bluetooth connection. Once connected, pairing is not required the next time. By taking out both earbuds simultaneously, they can be used as a pair, and the left and right earphones can be connected and used individually with different devices. All operations such as music playback/pause/track switching/call start/end/reject are possible. How to pair the earphones for the first time: ① Take the earphones out of the charging box, and both earphones will flash blue and red alternately. ② After about 3 seconds, the left earphone light will turn off, and the right earphone light will flash blue and red alternately. Pairing is successful. ③ Turn on Bluetooth on your smartphone, search for "F9" and connect. The lights on both earphones will turn off. Connection with the earphones is complete. ④ For the second use, no pairing operation is required; simply turn on both earphones, and automatic connection will start. Latest LED Display Battery Level Indicator The fully wireless earphones have an LED display that shows the battery level at a glance. [Comfortable Fit & Lightweight Design] The earphones are ergonomically designed and combined with the optimal size for the ears, providing a comfortable fit that is comfortable even for long periods of wear. You can experience the high connection performance with confidence on both iOS and Android devices. You can freely switch between single-ear/dual-ear modes.