Dear buyer, when you buy, you can choose between battery or rechargeable hearing aid, The Q10 and Q70 use batteries, they are black, the left ear of the rechargeable model is blue, and the right ear is red. INVISIBLE & COMFORTABLE: This hearing amplifier is almost invisible, with highly advanced amplification technology, easy to hide and comfortable to wear. CRYSTAL CLEAR SOUND: 6 Channels digital proceor, layered noise reduction, provide you with high quality sound, enjoy clearer conversations immediately. Q70 MULTI FUNCTION SWITCH: Control programs and volume adjustments at the touch of a button, there are 3 programs and 8 volume levels, help you hear sounds of nature. Note: If you have difficulty operating small items, this unit might be too small for you. GIFT PACKAGING: Our hearing amplifiers are offered with exquisite packaging and complete acceories. This unit is a great gift for your families and friends. This small, compact device is very durably made with superior materials and outstanding reliability. CHOOSE US NOW. battery rechargeable