Select Gaming Mode for low latency connection which provides a competitive gaming advantage that syncs more immersive for videos and music. Audio Mode upscale compressed digital music files, bringing them closer to the quality of High-Resolution Audio. Speaker Size: 10 mm Frequency Response: 20 Hz-20 kHz Earphone Sensitivity: 102 dB @ -10 dBFS Mic. Sensitivity: -42 dB @1 kHz/Pa Earphone Impedance: 32 ohm Bluetooth Version: v5.1 Operation Distance: 10 m Earphone Battery Type: Lithium Battery (40 mAh) Charging Case Battery Type: Lithium Battery (500 mAh) Charging Power: 5V=1A Earphone Charging Time: ＜1.5H (Low Battery to Fully Charged) Case Charging Time:＜2H (Low Battery to Fully Charged) Music Playtime with Single Charge: ≈4H Playtime from Charging Case: ≈24H Weight: 50 g 6 Months Warranty