LG TWS Earphones HBS FN4 LG TONE Free FN4. Product type: Headset, Wearing style: In-ear, Recommended usage: Music. Connectivity technology: True Wireless Stereo (TWS). Ear coupling: Intraaural. Microphone type: Built-in. Battery type: Built-in battery, Battery technology: Lithium-Ion (Li-Ion), Battery life (max): 6 h Features: Plug Into Wireless Freedom Wirelessly Connect to Devices without Bluetooth Clear and Spatial Sound with Meridian Enhanced Active Noise Cancellation Self-clearning Buds Hypoallergenic and Comfortable SleekFit with Concha-shaped Design Specifications: Dimensions: H:2.0 x W:1.6 x D:3.2 cm Colour: Black Model Number: HBS-FN4.ABEUBK