HOCO ESD15 are wireless Bluetooth headphones

The Hoco ESD15 are wireless Bluetooth headphones designed for comfort, convenience, and extended listening. 

Features:

Bluetooth Connectivity: Utilizes Bluetooth Version 5.3 with JL AC6925F chipset for stable and reliable connection to your devices.
Audio Quality: Equipped with 40mm drivers that deliver clear and powerful audio, providing an immersive listening experience.
Long Battery Life: Packs a 400mAh battery offering up to 12 hours of continuous music playback or talk time on a single charge.
MicroSD Card Support: Supports microSD cards up to 32GB, allowing you to store music files directly on the headphones and enjoy them without needing a connected device.
Multiple Playback Options: Offers Bluetooth, microSD card, and AUX cable connectivity for versatile usage.
Quick Charging: Supports fast charging via USB Type-C, taking only 2 hours for a full charge.
Comfortable Design: Lightweight and presumably comfortable design for extended wear.
Specifications:

Bluetooth Version: 5.3
Chipset: JL AC6925F
Speaker Size: 40mm
Battery Capacity: 400mAh
Music/Talk Time: Up to 12 hours
Standby Time: Up to 200 hours 
Charging Time: Approximately 2 hours
Charging Interface: USB Type-C
MicroSD Card Support: Up to 32GB
Frequency Range: 2.402-2.480 GHz 
Operating Range: 10 meters (may vary depending on environment)
Supported Protocols: A2DP, AVRCP, HSP, HF