YSP21 BT5.3 ENC Call Noise Reduction Magnetic Ear Shells Large Button Design BT Halterneck Headset
BT: JL 7003 V5.3 | Battery: 280mAh | Necklace using style | Speaker: φ10mm Composite membrane | Using time: 40Hours
Model:YSP21 Sports Necklace Wireless Earphone