ZIP – TWS AURICULARES EARPHONES WITH CHARGING CASECLEAN AND ERGONOMIC DESIGN – LIGHTWEIGHT AND ULTRA COMFORTABLE – SIMPLIFIED OPENING – WITH TRUE WIRELESS TECHNOLOGY, NO MORE CABLES – CHARGING BOX TO EASILY STORE, TRANSPORT AND CHARGE YOUR HEADPHONES – THE BOX’S BACK-UP BATTERY EXTENDS THE AUTONOMY OF THE HEADPHONES .POWER SUPPLY: INTEGRATED 30 MAH LITHIUM-POLYMER BATTERY – AUTONOMY: 15 HOURS – RANGE: 10 METERS – CONNECTIVITY: BLUETOOTH 5.1 – MAGNET DIAMETER: 10 MM – FREQUENCY RANGE: 20 – 20,000 HZ – IMPEDANCE: 32 OHM – INTEGRATED UNIVERSAL MICROPHONE – SENSITIVITY: 105 DB – TYPE: SEMI IN-EAR – COL. BLACK