Factory Direct Wireless Bluetooth Earbuds Tws Earphone with Heart Rate Monitor Fitness Tracking Headset Sport Health. Bluetooth 5.0 Technology: Features advanced V5.0 Bluetooth for stable connection and dual track sound. IPX-9 Waterproof Rating: High-level waterproof protection suitable for intense sports and fitness activities. Long Battery Life: Provides 60 hours of music playtime with a 300mAh charging case. OEM and ODM Services: Full customization available including design, samples, and minor adjustments. Flexible MOQ: Minimum order quantity starts at 100 pieces with no strict limits. 1-5 Year Warranty: Comprehensive after-sales service with rigorous quality inspection before shipment. Fast Shipment: Efficient logistics with lead times within 15 workdays or one month. Pop-up Window Feature: Smart charging case with pop-up window for easy battery status monitoring.