Model: EQ2 Connectivity: Bluetooth 5.3, supported protocols: Headset, Hands-free, A2DP, AVRCP Driver Unit: 13 mm dynamic driver Battery (Earbuds): ~35–40 mAh each Battery (Charging Case): 320 mAh Playback / Talk Time: Up to 7 hours on earbuds alone Standby Time: Up to 180 hours Transmission Distance: ~10 meters 7 Days replacement warranty

Model: QCY MeloBuds N50 Bluetooth version: 5.4 Driver: 12 mm bio-fiber diaphragm ANC: Up to 45 dB adaptive noise cancellation Microphones: 6 mics 6 months replacement warranty

Model: V40i Driver Size: 16×13 mm customized dynamic drivers Connectivity: Bluetooth 5.4 with multipoint pairing support Microphones: 4 with AI noise reduction Water/Dust Resistance: IP55 (earbuds) with SweatGuard technology Controls: Touch controls (customizable via app) 7 Days replacement warranty