The Sanag B21S Bone Conduction Bluetooth Earphones deliver sound through vibrations against your skin, keeping your ears completely open to the world around you.

Whether you're jogging through your neighborhood, cycling on busy streets, or working at your desk, you hear everything—your music, incoming calls, and traffic or colleagues—all at once without removing anything from your ears.

These earphones let you stay aware of your surroundings while enjoying crystal-clear audio, making them ideal for anyone who needs to multitask between entertainment and environmental awareness.

With 10 hours of battery life and a secure, lightweight design, they're built to keep pace with your active routine from morning to night.

Stay Connected While Staying Aware of Your Surroundings

• Open-Ear Design: Hear your music and the world around you simultaneously without blocking your ear canals.
• All-Day Battery: Get up to 10 hours of continuous playback on a single charge.
• Water-Resistant Build: Sweat and light rain won't damage your earphones during workouts or outdoor activities.
• Lightweight Comfort: Wear them for hours without fatigue or pressure on your ears.
• Easy Controls: Manage volume and calls with intuitive buttons and built-in microphone support.

Specification	Value
Brand	Sanag
Model Number	B21S
Technology	Bone Conduction
Bluetooth Version	5.4
Wireless Range	10 m (32.8 ft)
Battery Life	Up to 10 hours
Charging Port	USB Type-C
Weight	210 g (7.4 oz)
Dimensions	108 mm × 5 mm × 126 mm (4.25 in × 0.20 in × 4.96 in)
Water Resistance	Yes
Material	Plastic
Microphone	Built-in
Certifications	CE, FCC, RoHS, WEEE