Product name: bluetooth wireless super bass stereo tws headset
type: tws (true wireless stereo)
style: ear-bud touch operation
connection type: wireless (bluetooth)
bluetooth version: v 5.0 + edr - ble - br
bluetooth frequency: 2.4 - 2.48 ghz
transmission range: about 10 meters
charging time: approximately 1-2 hours
continuous talk time: up to 3 hours
continuous music time: up to 3 hours
continuous standby time: up to 220 hours
speaker bandwidth: 20 hz - 20 khz
impedance: 32 (ω)
case battery capacity: 350 mah
headset battery capacity: 40 mah x 2
sensitivity: 105db
distortion rate: 0.01 (%)
dimension: 4 x 0.75 cm
material: abs, tp plastic & silicon
colour: black - white - green - blue - yellow - pink, etc.
weight: approximately 8 grams
waterproof standard: ipx 3
certificate: ce (emc), rohs, fcc, rohs