JBL WAVE BEAM 2;Driver size: 8 mm/ 0.3�� Dynamic Driver Maximum operation temperature:       45 �C Power supply: 5V 1A Frequency response: 20 Hz - 20 kHz Impedance: 16 ohm Sensitivity: 100 dB SPL@1 kHz Maximum SPL: 95 dB Microphone sensitivity:                             -38 dBV/Pa@1 kHz Bluetooth version: 5.3 Bluetooth profile version: A2DP V1.4, AVRCP V1.6.2, HFP V1.8 Bluetooth transmitter frequency range: 2.4 GHz � 2.4835 GHz Bluetooth transmitter power: <12 dBm (EIRP) Bluetooth transmitter modulation: GFSK, ?/4-DQPSK, 8DPSK Earbud weight: 4.3 g per pc (8.6 g combined) 0.0095 lbs per pc (0.019 lbs combined) Charging case weight: 41 g/ 0.09 lbs Earbud dimensions: 32.4*22*23.3 mm Charging case dimensions: 64.3*25.8*48 mm Earbud battery type: Lithium-ion battery (50 mAh/ 3.85 V) Charging case battery type: Lithium-ion battery ( 550 mAh/ 3.7 V) Charging time: 2 hrs from empty Music playtime with BT on and ANC off: Up to 10 hrs Music playtime with BT on and ANC on: Up to 8 hrs Talk time with ANC off: Up to 6 hrs Talk time with ANC on: Up to 5.5 hrs;MRP is Rs.7999;MOQ is 100 pcs