BT Earbuds with Bamboo Case & High Audio Quality Categories: Technology, Subcategories: Smart Phone Accessories, Earphones, SKU Code: MTM EAR Product Description Made of bamboo. Size (in mm): 47 x 75 x 30. Weight (0.08 kg). Frequency of Bluetooth - 5.0 15 Hz – 60 Hz. Work Duration: 2.5 hours Time on Standby: 90 hours. Charged for 2 hours. Operating Range: Ten Meters or less. Send Inquiry