For the best listening experience…HDB311 is designed for lovers toward sports and music which provide ultimate comfortable wearing and listening experience.
HDB311 is equipped with 8mm driver to provide extremely flat frequency response and full-range details. Delicate treble and strong bass provide vivid and high-quality music experience even when taking exercise ! Excellent stability when wearing. IPX5 level water-proof to resist sweat and spill water when taking exercise.
Features
• Cubic Backcup design delivers the bass reflection effect same as the speaker cabinet to provide deeply but clean bass frequency for wide range use.
• 8mm diameter driver for hight sound quality.
• Standard Bluetooth® specification ver 4.0 for stable connection and no interference by the surrounding.
• Includes an in-line remote control with microphone.
• Able to cope with vigorous exercise and keep the comfort wearing at the same time.
• Furnished with three different sizes of earplugs and ear hooks for every individual to find the best fit.
Specifications
Type：Dynamic, In-ear
Driver：Ø8mm, neodymium
Sensitivity：103 dB SPL（1mW）at 1KHz
Frequency Response：20-20,000 Hz
Rated Impedance：16Ω（copper-coated aluminum wire）
Cable：0.5 meter
Operating Distance：10m（free space）
Support：HFP / HSP / A2DP / AVRCP
Battery
Talk time：up to 6 hrs
Music playtime：up to 4 hrs
Charging time：around 1.5 hrs
HDB311 Frequency Response
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