bluetooth speciification v2.0 class 2 supports bluetooth headset & handsfree profiles rechargeable li-polymer battery talk time: up to 6.5 hours music playing time: up to 6.5 hours (including radio playing time) standby time: up to 150 hours compatible with i.tech 110 ~ 240vac switching power charger weight: 26.3 grams parallel imported warranty: warranty one year delivery within 2-4 business days