Dimension:
<br />Earbud: 14mm (D) x 20mm (L)
<br />Portable charging case: 16mm (D) x 56mm (L)
<br />Weight:
<br />Earbud: 0.1 oz
<br />Portable charging case: 0.5 oz
<br />Battery input:
<br />Earbud: 5V / 20mA
<br />Portable charging case: 5V / 110mA
<br />Battery capacity:
<br />Earbud: 50mAh
<br />Portable charging case: 110mAh
<br />Charging time:
<br />Earbud: 2.5-3 hours
<br />Portable charging case:   120 minutes
<br />Battery output (Portable charging case): 5V / 20mA
<br />Battery type: Rechargeable lithium-ion polymer battery
<br />Standby time (power on): about 200 hours
<br />Music/Talk time: up to 3 hours (up to 6 hours with the portable charging case)
<br />Frequency response: 100Hz-15kHz
<br />Bluetooth version: 4.1
<br />Bluetooth profiles: HFP, HSP, AVRCP, and A2DP
<br />Audio enhancements: cVc noise reduction
<br />Package includes:
<br />1 Bluetooth Earbud
<br />1 Portable Charging Case
<br />1 USB Charging Cable
<br />1 Lanyard
<br />3 Ear Tips: Small, Medium, Large
<br />1 User Manual