Purchased on October 17, 2025 (Friday) I am selling this because it didn't suit me. I have disposed of the box, so only the main unit and accessories are included. Lightweight and waterproof bone conduction wireless earphones, capable of approximately 10 hours of continuous playback. - Model Name: GRFD-BCH G4 BK - Color: Black - Driver Size: 13mm - Weight: Approximately 20g - Waterproof Rating: IPX5 - Bluetooth Version: 5.0 - Battery Capacity: 600mAh - Continuous Playback Time: Approximately 10 hours - Communication Distance: Approximately 10m Thank you for viewing.