Наушники — JBL TUNE 720BT

The Tune 720BT is a Bluetooth over-ear model from the Harman-owned JBL, offered without active noise cancelling in the Tune range, which is the entry tier of the JBL headphone catalogue. Its spec sheet dates from 2023, and JBL built it around long battery life, Bluetooth 5.3, a foldable frame and a detachable cable for wired listening. The earcups carry buttons for music, volume and calls, and a free companion app adds an adjustable equaliser and voice prompts in the owner's language that walk through each function. JBL lists the tuning under its Pure Bass Sound name.

Key specs that matter

JBL fits a 40 mm dynamic unit into each earcup, with a stated frequency response of 20 Hz to 20 kHz, an impedance of 32 ohm and a sensitivity of 101 dB SPL at 1 kHz and 1 mW. Maximum SPL is listed at 95 dB. The rated playtime with Bluetooth on reaches 76 hours from a 3.7 V, 500 mAh lithium-ion cell, a full recharge from a 5 V, 1 A USB-C supply takes about 2 hours, and 5 minutes on the charger adds roughly 3 hours of music. The radio works in the 2.4 GHz to 2.4835 GHz band with GFSK, pi/4-DQPSK and 8-DPSK modulation at no more than 10 dBm EIRP, and supports HFP v1.7.2, AVRCP v1.6.2 and A2DP v1.3.2 profiles. The headset weighs 220 g. JBL gives the ear cup external size as 7 x 7 cm, the internal opening as 9.3 x 7.6 cm and the cup depth as 4.8 cm, and the supplied audio cable is 1.2 m long.

Engineering and use context

Multi-point connection keeps two source devices linked at once, so a call on a phone can interrupt a video playing on a tablet without re-pairing. Voice Aware lets the wearer hear their own voice while on a call. Lightweight materials, soft ear cushions and a padded headband are meant for long sessions, and the cups fold flat to fit into a backpack. The microphone sensitivity is quoted at -40 dBV per Pa, and the operating temperature limit is 45 degrees C. The box holds the headphones, a USB-C charging cable, the detachable audio cable, a printed QSG plus the warranty sheet.

Pairing

The source can be whichever phone, tablet or notebook has Bluetooth, and the app on the phone handles EQ changes. When the cell runs flat, the supplied cable connects the headphone to a jack output, so a portable player or a laptop socket keeps it in use without charging.

Alternatives

The JBL Tune 770NC is the over-ear Tune model that adds Adaptive Noise Cancelling with Smart Ambient, rated for up to 70 hours with ANC off and weighing 232 g.