This high-quality, extendable headset ensures a snug and secure fit, adapting to any user. Upgrade your listening experience with the for BT20 Pro, featuring advanced Bluetooth 5.3 technology for a seamless wireless connection. This high-fidelity earphones module is designed to enhance audio quality, making it perfect for audiophiles. The replaceable plug and adjustable ear hooks offer custom comfort and durability, adapting to your unique needs. Whether for casual listening or professional monitoring, the for BT20 Pro provides exceptional sound quality and reliability, turning your standard earphones into premium wireless audio devices. Can be swappable to connect the wireless to the bottom. Communication distance:15m Bluetooth version:Bluetooth 5.3 Charging interface:Type-c Bluetooth chip:High quality Bluetooth 5.3 chip Battery capacity:80mAh (single ear) Charging compartment capacity:1000mah Standby time:180H Music playback (Bluetooth module+charging compartment):50H (single ear loop 13H) Charging time (ear hook/charging compartment):15-2H/2.5-3H Due to different batches, there may be differences in product appearance and printed text, which will not affect use. Model:BT20 Pro-S Colour:Black Material:ABS Package Contents: 1 * Headphone 1 * Charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.