Oppo reno 6 new mobile waterproof July 8, 2019 16 32 64 128 Oppo reno 6 mobile waterproof Oppo reno 6 waterproof mobile 5g Oppo reno 6 pro blue Oppo reno 7 pro water test Oppo reno 6 pro price in nepal Oppo reno 8 pro water test