Item name: wireless earphones
material: pc, abs
headphone chip: for raychem 5.0 chip
control method: fingerprint touch
bluetooth version: v5.0 + edr
speaker impedance: 32ohm +/- 15%
microphone sensitivity: +/-40db
wireless frequency: 2.405ghz - 2.480ghz
working temperature: -10 degree celsius - 55 degree celsius
power: dc 5v
support file formats: a2dp, avrcp, hsp, hfp
transmission power: class 2
wireless distance: about 10m
charging box battery capacity: 400mah (included)
headphone battery capacity: 50mah (included)
play time: 3-5 hours (the charging box can charge 4 times for dual headphones.)
charging time: 1-2 hours
features: wireless, bluetooth 5.0, ergonomic, with charging box
charging box size: 5.6cm x 4.3cm x 2.1cm/2.20" x 1.69" x 0.83" (approx.)