Ultra-Fine Wires - Low-profile wires uses quality Kevlar fiber and accentuate the slim design. Contoured for Comfort Design - Lightweight around-the-neck wearing style achieves true comfort. Quad-Layer Speaker Technology - Balanced audio and less distortion. Dual MEMS Microphones - Maintain exceptionally clear voice calls. Tone & Talk 2.0 - SMS reading with added Voice Memo and Find Me features, allowing you to use your TONE PRO to record voice memos or find your paired device.