1. Digital Display: The wireless in-ear headphones' charging case features a digital LED battery level display, clearly showing the battery status at a glance. The excellent digital display and cool lighting effects add a stylish and futuristic touch to the design. 2. Wireless Bluetooth: These TWS earphones offer wireless connectivity via Bluetooth, allowing you to move freely without worrying about wires. Enjoy convenient listening and seamless connection to your devices. Product Name: Bluetooth Headset Model: Pro 90 Color: Black Material: ABS Bluetooth Version: V5.3 Bluetooth Distance: 15m Standard Voltage: 3.7V # Those who are nervous, perfectionists, or seek high quality, please refrain from purchasing.