Bluetooth Version: 5.0

Bluetooth Distance: 15 meters

Talk Time: 6 hours

Music Time: 4 hours

Working Frequency: 300 - 3000 KHz

Net weight: 43.5g

Battery: Lithium Polymer 110mAh*2, 220 mAh.

Working Temperature: Minus 20-60 degrees Celsius

Charge Time: 120 minutes

Standby Time: 7 days

Materials: Nylon, Acetate, Stainless Steel, PC, etc

Noise Reduction: Yes

Water Resistance: IP67