⚡Specifications   Brand: boAt Model Name: Nirvana Crystl Color:  Quantum Black, Yellow pop, White lustre, Blazing red Driver: Dual 10 Mm Dynamic Drivers Frequency Response: 20 Hz – 20 Khz Bluetooth Version: V5.3 Noise Cancelling: Active Noise Cancellation (Anc) Upo 32 Db Spatial / Surround Sound: Boat 360° Spatial Audio + Boat Signature Sound Microphones: Quad Mics With Enx™ Noise-reduction Technology For Clearer Calls Latency / Gaming Mode: Beast™ Mode With Low Latency ~ 60 Ms Water / Sweat Resistance: Ipx4 Splash / Sweat Resistance Battery (Earbuds): 70 Mah × 2 (One Per Earbud) Total Playback Time: Upto 100 Hours With Case (Earbuds + Case Combined) Single-charge Earbuds Playtime: ~ 18–20 Hours (Depending On Anc / Volume) Charging Time: ~ 1.5 Hrs For Earbuds, ~ 2.5 Hrs For Charging Case