These Bluetooth wireless headphones offer a great listening experience with their powerful 40mm drivers and advanced Bluetooth 5.0 technology. They have a long battery life of up to 30 hours and come with a charging case that also acts as a portable power bank. The headphones are comfortable to wear and have a noise-canceling feature that helps block out external noise. They also have a built-in microphone for hands-free calling and voice assistant support. The headphones are compatible with a wide range of devices, including smartphones, tablets, and laptops. Model: x15 Bluetooth version: 5.3 Plan: Lan Xun Headphone power consumption: 8mah Horn specification: 13mm Earphones measure 3 hours of listening time Earphone battery: 30mah, full charge time: about 1h Charging compartment battery: 200mah, full charge time: about 2 hours Charging the earphones in the charging compartment: approximately 2-3 times Charging interface: type-c Headphone material: ABS Bare metal machine net weight: 39g