BLUETOOTH CRYSTALLIZED HEADPHONES
Bluetooth specification: V4.1. Innovative and special design with high audio quality. The Bluetooth technology: up to 10m distance. Hands-free and clear quality sound. Adjustable headband: perfect fit and maximum comfort. Support 3.5mm audio input. Built-in 500mAh Lithium-ion battery. Battery life of 8-10 hours per charge. Charging time: 2-3 hours. Model: Ai Pro.