The ACEFAST W4 are compact Bluetooth 5.4 true wireless earbuds built for everyday listening and clearer calls. A 10 mm driver delivers lively sound, while ENC/AI noise reduction helps your voice cut through background noise on calls. The pocket case doubles as a mini phone stand with three adjustable angles—great for watching videos or attending calls hands-free. Expect up to ~7 hours on a single charge and roughly ~28 hours with the 350 mAh case; a 10-minute quick charge adds about 2 hours of playtime. With USB-C charging, IPX4 splash resistance, and support for SBC/AAC, W4 is a practical pick for Android and iPhone users in Bangladesh.