🔹 Specifications

• 
  Model: Catear J21

• Bluetooth Version: 5.0

• Wireless Range: Up to 10 meters

• Speaker Driver: 40mm

• Frequency Response: 20Hz – 20KHz

• Battery: 3.7V Rechargeable

• Play Time: Up to 5 hours

• Talk Time: Up to 5 hours

• Charging Time: ~2 hours

• Weight: 210g

• Dimensions: 210 × 180 × 80 mm

🔹 Key Features

• 
  Clear Stereo Sound – rich bass and balanced audio

• Bluetooth 5.0 Connectivity – stable and fast wireless connection

• Multi-Mode Playback – Bluetooth, FM Radio, AUX, TF Card

• Built-in Microphone – hands-free calling support

• Foldable Design – easy to carry and travel-friendly

• Adjustable Headband – comfortable for long use

• On-Head Controls – control volume and music easily

• Universal Compatibility – works with smartphones, tablets, laptops, TVs