Custom-built acoustic architecture tuned for music first to deliver big Beats sound with full range and clarity Dual-layer drivers minimize micro-distortions across the frequency curve, ensuring high-fidelity sound with uncompromising accuracy Axial-aligned drivers are positioned parallel to the acoustic nozzle to deliver sound more directly to your ears The smallest, lightest case Beats has ever made Ergonomically angled acoustic nozzles for a natural fit Laser-cut vents engineered to improve bass performance while gently relieving air pressure for added comfort Four eartip options (XS, S, M & L) to fit a wider range of ear sizes Bud Specs: Length: 2.05 cm / 0.81 in Width: 1.85 cm / 0.73 in Height: 1.9 cm / 0.75 in Weight: 5.7 g Case Specs: Length: 6.6 cm / 2.6 in Width: 3.5 cm / 1.4 in Height: 2.4 cm / 0.9 in Weight: 22 g Single multi-function button per side Beats Solo Buds earbuds Carrying case Eartips with four size options (XS, S, M, L) Warranty card (Power adapter and USB-C charging cable sold separately) Extended earbud battery life with up to 18 hours of playback2 With Fast Fuel, a quick 5-minute charge gives up to 1 hour of playback5 USB-C universal charging Charge directly from your phone,6 tablet or laptop for extra power on the go Rechargeable lithium-ion battery