R22 offers easy pairing and stable connection with up to 15m long connection distance. It delivers stunning sound quality with comfortable wearing experience. It is compact and lightweight, easy to carry and store. <Br/>features:<br />[bt 5.0 Chip]<br />adopting advanced bt 5.0 Technology, the earbuds provide one-step pairing, faster transmission speed and lower power consumption.<Br />[stable connection]<br />using high-tech smart bt baseband, r22 has strong penetration signal, which supports up to 15m transmission distance with stability.<Br />[premium stereo sound quality]<br />with powerful full-frequency diaphragm, the earbud delivers 4d stunning sound quality and powerful bass for more intoxicated listening experience.<Br />[quality material &amp; comfortable wear]<br />industrial-grade pvc material, dust-proof and fall resistant. Silicone earplug with ergonomic design effectively ensures in-ear wearing comfort.<Br />[ipx7 waterproof &amp; long endurance]<br />ipx7 waterproof allows you to deal with daily water activities easily. 300Mah charging box offers long battery life for daily use after fully charged.<Br />[digital display &amp; smart touch-control] <br />led-digital screen shows clearly the battery charging status and remaining power. Volume, call and music control can be done easily with simple-touch.<Br />[universal compatibility]<br />widely compatible with ios and android systems, meeting diverse listening needs.<Br/>specifications:<br />model: r22<br />material: pvc<br />color: black / white (optional)<br />bt version: 5.0<Br />bt protocol: hfp / a2dp / hsp / avrcp<br />transmission distance: 10-15m<br />waterproof: ipx7<br/>earphone battery: 3.7V / 45mah<br />charging box battery:3.7V / 300mah<br />call time: 3-4h<br />play time: 3-4h<br />earphone charging time: 40-50mins<br />item weight: 40g / 1.41Oz (include charging case)<br />package size: 11.6 * 11.4 * 4.3Cm / 4.57 * 4.49 * 1.69In <br />package weight: 94g / 3.32Oz<br/>package list:<br />1 * bt earphones<br />1 * charging box<br />1 * charging cable<br />4 * earplug silicone caps<br />1 * user manual