The BOROFONE BC21 “Encourage Sound” is a compact mono Bluetooth 4.2 headset built for everyday hands-free calling at work, on the road, or on the go. The WT200 platform supports classic headset profiles (HFP/HS, A2DP, AVRCP) for wide phone compatibility, while the 70 mAh battery delivers up to ~4 hours of talk/music and ~120 hours standby. A quick ~1.5-hour recharge via DC 5V keeps you moving. At just 9 g with a slim 55×15×20 mm body, it’s comfortable for long wear and easy to carry—an ideal single-ear solution for Android and iPhone users in Bangladesh.