2026 Crystal Factory Directly Sell Bluetooth Earphone PRO 2ND with Valid Serial Number

2026 Crystal Factory Directly Sell Bluetooth Earphone PRO 2ND with Valid Serial Number. Valid Serial Number: Pro 2nd Generation earphones come with a valid serial number for authenticity verification. Multiple Quality Grades: Available in Grade AA, AAA, and AAA+ to meet different quality and budget requirements. Fast Delivery Options: DDP shipping to USA, UK, France, etc., with no customs duties or VAT for selected countries. Low MOQ & Samples: Minimum order quantity is 1 piece. Sample fee is refundable upon placing a bulk order. OEM/ODM Support: Customized logos and packaging are welcome. Full OEM and ODM services are available. 12-Month Warranty: 12-month warranty since shipment with replacement or refund for quality issues. High Capacity Battery: 1200mAh charging case provides extended standby time of up to 140 hours. Ready Stock Supply: 10,000 pieces ready to ship daily from stock to ensure fast fulfillment.