Bluetooth Neckband Earphones with Ab5656b Chip, 200mAh Battery 12h Playtime, Aluminum Alloy + ABS with Silicone Collar, Magnetic Switch, Factory Wholesale. AB5656B Advanced Chipset: Powered by Bluetrum AB5656B chipset for stable Bluetooth connection, low power consumption, and high-quality audio transmission. 200mAh Battery 12H Playtime: Built-in 200mAh battery delivers over 12 hours of continuous playback for long workouts, travel, and daily use. Magnetic Auto ON OFF Switch: Built-in magnetic sensor automatically turns earphones on when connected and off when detached, extending battery life. Aluminum Alloy + ABS + Silicone Build: Premium aluminum alloy housing with ABS frame and soft silicone neckband ensures durability and comfort. Ergonomic Silicone Neckband Design: Flexible silicone collar conforms naturally to neck shape, providing all-day comfort without pressure. 4 Color Options Available: Available in Black, Black-Red, Blue, and Gray. Custom colors supported for wholesale orders. Stable Bluetooth Connection: Advanced Bluetooth technology offers stronger anti-interference and stable connection for seamless audio. High-Quality Sound with Deep Bass: Professional tuned drivers deliver rich, balanced sound with powerful bass and clear mids. IPX5 Waterproof Rating: Sweatproof and splashproof construction protects against rain and sweat for outdoor sports. Factory Direct Wholesale Price: Competitive pricing with flexible MOQ and quick turnaround for bulk orders with custom logo.