LANGSDOM BS17 Sports Bone Conduction Earphones Wireless Bluetooth Headphone Ultra-light Headset for Running Fitness

• Ear-bone sound transmission technology: Using bone conduction technology, the sound is transmitted to the auditory nerve through the skull and jawbone to cause hearing, skipping the outer ear and the middle ear; at the same time, it does not hinder the transmission of sound waves through the air
• Stable: ergonomic in-ear design, stable and comfortable, easy to control a variety of sports, intense exercise is never limited
• Aviation-grade material: comfortable to wear without in-ear, long-term wear without pain, no pain in work, sports, and wearing all day long, giving you an extraordinary music experience
• High-definition call noise reduction: built-in microphone, no need for mobile phone operation, earphone-key answer, no delay in calls during exercise, high-definition noise reduction technology, clear calls even in noisy environments
• New breakthrough: lightweight body design, the whole machine weighs only 30g, comfortable and gentle texture, light enough to forget it exists, and more comfortable to exercise

Specifications:

• Bluetooth version: BT V5.0
• Frequency: 2.402-2.480Ghz
• Working distance: 10m
• Bluetooth antenna mode: ceramic antenna (2.45G antenna)
• Number of channels: Stereo two-channel
• Output power (Max); 8mW
• Rated power: 5mW
• Frequency range: 20-20kHz
• Sensitivity: 90dB±3dB @1KHz
• Distortion: ≤5% @1KHz
• Impedance; 16Ω ±15%
• Single Sensitivity; Sensitivity 106db
• Chip solution; BK3266
• Battery Type/Capacity; Lithium Polymer Battery 551225, 150mAh
• Playing time: about 12H
• Charging time: 2 hours