-959 true Wireless Stereo Earbuds -Earbuds, Connectivity - Bluetooth, Microphone - Yes Working/Bluetooth Range - 10 Meter -Bluetooth Version - Bluetooth 5.1 -Sound Mode - Stereo, Waterproof - Yes -Waterproof Grade - IPX4 -Dustproof - No, Shockproof - No -Battery - 40mAh (Each Earbuds) -300mAh (Charging Case) -Rechargeable Battery - Yes -Charging Time - 1.5 Hours (Earbuds) -2 Hours (Charging Case) -Playing Time - Up to 5 Hours -Feature - Powerful Bass Performance -Ergonomic In-ear Buds Design -Low latency Mode for 65ms delay -Master-Slave Switch, Others - Chip: JL6976, Specialty