Technics EAH-AZ40 True Wireless Earbuds deliver high‑fidelity sound with 6 mm drivers, a dedicated acoustic chamber, and six MEMS microphones for clear calls. JustMyVoice concentrates speech and reduces ambient noise, with wind-noise reduction for outdoor use. Bluetooth 5.2 supports A2DP/AVRCP/HSP/HFP with SBC and AAC; playback is about 7.5 hours per charge and up to 25 hours with the charging case. Includes XS–XL silicone tips and USB-C charging cable.