OnePlus Buds Z

Model: E502A
Product colors: White
Dimensions: Earbuds: 37.98mm*23.35mm & Charging case: 75mm*35.9mm*29.05mm
Weight: Earbuds: 4.35 g5 6 & charging case: 40 g
Drivers; 10 mm dynamic
Driver sensitivity: 97 dB ± 3dB @ 1 KHz
Sweat and water-resistant: IP558
Bluetooth version: BT 5.0
Wireless range: 10 meters
Charging interface: Wired, USB Type-C (for charging case)

Playtime (fully charged)
Up to 5 hours2 (music playback)
Up to 3 hours (phone call)
Up to 20 hours (combined playback)

Fast charge: 10 mins for 3 hours3 (charging case + earbuds combined)
Battery capacity: Per earbud: 40 mAh
Charging case: 450 mAh