Ultimate Ears Boom 4 Portable Speaker - Active Black Condition:Great even when captured in motion

even when captured in motion

including 5G

and free of major flaws

and instantly see the impact of high-end camera hardware

They sit at just the right angle for comfort and to better direct audio to your ear

Ultimate Ears Boom 4 Portable Speaker - Active Black Condition:Great even when captured in motionTechnical Specifications General Specifications Battery life: Up to 15 hours of battery life between type C USB charges*. (*Actual battery life will vary with use, settings and environmental conditions.) Battery type: Rechargeable lithium ion battery Maximum sound level: 85 dBC (normal)*. (*The actual SPL may vary depending on the environment.) Drivers: two 1. 57 in (40 mm) active drivers and two 1. 81 x 2. 57 in (46. 1 x 65. 2 mm) passive radiators