General Specifications Driver size (mm) 6 Number of Microphones 4Audio Specifications Driver sensitivity at 1kHz/1mW (dB) 105 Dynamic frequency response range (Hz) 20 Hz – 20 kHz Impedance (ohms) 16 Dimensions Charging Case Weight (g) 47.3 Charging Case Weight (oz) 1.7 Earpiece Weight (g) 10.2 Earpiece Weight (oz) 0.4 Control and Connection Specifications Bluetooth profiles A2DP 1.3 , AVRCP 1.6 HFP 1.7 Bluetooth frequency 2.4 GHz - 2.4835 GHz Bluetooth transmitted modulation GFSK, π/4-DQPSK, 8-DPSK Bluetooth transmitter power <12 dBm Bluetooth version 5.2 Battery Charging time (hours from empty) 2 Maximum music play time with ANC off (hours) 10 Maximum music play time with ANC on (hours) 8 Maximum play time (hours) 40 What's in The Box? 1 x JBL Tune 230NC TWS earbuds 1 x USB Type-C charging cable 1 x 3 sizes of eartips 1 x Charging case 1 x Quick Start Guide / Safety Sheet (S / i) 1 x Warranty / Warning (W / !)