Docooler Study Wireless Headphone

Specification: Item Type: Study Headphones Working modes: study mode, BT mode, TF card mode. BT version: 5.4. BT range: ≤ 10 metres. Supported memory card formats: MP3, Mav, WMA, FLAC, APE Maximum capacity of TF cards: 256 GB (TF card not included). Speaker: 40 mm driver, 32 Ω, 0.5 W. Battery: 1000mAh rechargeable lithium battery How to use: Connect BT or insert a TF card. Package list: 1 x over-ear headphones. 1 x removable microphone. 1 x Type-C charging cable. 1 x decorative sticker set. 1 x user manual (English)